Explanation
of Comet Synopses and charts (read this if you have questions)
C/2023 H2 (Lemmon): An
evening comet visible in small telescopes
This comet begins the month in Ursa Major at magnitude 8.6. Look
for a 14.5' coma, center much brighter than edges, though still diffuse. It
should fade rapidly, moving into Grus by month's end. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Fairly high during evening
twilight at ~18:10 |
Fairly high during evening
twilight at ~18:00 |
Low in the southern sky during
evening twilight at ~17:20 |
Not visible |
Not visible |
1-19 |
40o
N |
Fairly high during evening
twilight at ~18:20 |
High during evening twilight at
~18:10 |
Fairly high in the southern sky
during evening twilight at ~18:00 |
Low in the southern sky during
evening twilight at ~17:50 |
Not visible |
1- |
Equator |
Not visible |
High during evening twilight at
~18:50 |
High during evening twilight at
~19:00 |
High during evening twilight at
~19:00 |
High during evening twilight at
~19:10 |
6- |
30o S |
Not visible |
Low in the western sky during
evening twilight at ~19:40 |
High during evening twilight at
~20:00 |
High during evening twilight at
~20:00 |
High during evening twilight at
~20:20 |
10- |
12P/Pons-Brooks: A
northern hemisphere evening comet visible in small telescopes
This comet is in Hercules at magnitude 9.4. Look for a 2' coma,
diffuse condensation at center. Further outbursts are possible. Otherwise it
will nominally brighten by about 0.8 magnitudes, moving into Lyra by month's
end. FINDER CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
High during evening twilight at
~18:10 |
High during evening twilight at
~18:00 |
High during evening twilight at
~17:50 |
High during evening twilight at
~17:40 |
High during evening twilight at
~17:40 |
1- |
40o
N |
High during evening twilight at
~18:20 |
High during evening twilight at
~18:10 |
High during evening twilight at
~18:10 |
High during evening twilight at
~18:00 |
High during evening twilight at
~18:00 |
1- |
Equator |
Fairly high in the northern sky
during evening twilight at ~18:50 |
Fairly high in the western sky
during evening twilight at ~18:50 |
Low in the western sky during
evening twilight at ~18:50 |
Low in the western sky during
evening twilight at ~18:40 |
Low in the western sky during
evening twilight at ~18:50 |
1- |
30o S |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
103P/Hartley: A morning
comet visible in a 6-inch (15 cm) telescope
This comet begins the month in Hydra at magnitude 9.8. Look for
a 3' coma, center much brighter than edges, though still diffuse. It should fade
rapidly. FINDER CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Fairly high during morning
twilight at ~05:10 |
Fairly high at ~05:10 |
Fairly high at ~05:10 |
Fairly high in the southern sky
at ~05:40 |
Fairly high in the southern sky
in moonlight at ~04:20 |
1- |
40o
N |
High during morning twilight at
~05:00 |
High at ~05:00 |
High at ~05:00 |
High during morning twilight at
~05:30 |
High in moonlight at ~04:20 |
1- |
Equator |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
High at ~04:30 |
High during morning twilight at
~04:30 |
High in moonlight at ~04:20 |
1- |
30o S |
High during morning twilight at
~03:40 |
High during morning twilight at
~03:40 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:30 |
High in moonlight at ~03:00 |
1- |
62P/Tsuchinshan: A morning
comet visible in a 6-inch (15 cm) telescope
This comet begins the month in Gemini at magnitude 11.7. Look
for a 2.5' coma, center much brighter than edges, though still diffuse. It
should brighten rapidly, moving into Leo by month's end. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
High in moonlight at ~05:00 |
High at ~05:00 |
High at ~05:10 |
High during morning twilight at
~06:00 |
High in moonlight at ~05:40 |
1- |
40o
N |
High in moonlight at ~05:00 |
High at ~05:00 |
High at ~05:10 |
High during morning twilight at
~05:30 |
High in moonlight at ~05:30 |
1- |
Equator |
High in moonlight at ~04:30 |
High at ~04:30 |
High at ~04:30 |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
1- |
30o S |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:30 |
Fairly high during morning
twilight at ~03:30 |
Fairly high during morning
twilight at ~03:30 |
1- |
C/2023 P1 (Nishimura): A
southern hemisphere morning comet visible in a 6-inch (15 cm) telescope
This comet begins the month in Centaurus at magnitude 10.5. Look
for a 2.5' coma, virtually invisible. It should fade rapidly. The best
visibility is mid-month as seen from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
Low in the eastern sky during
morning twilight at ~04:50 |
Low in the eastern sky during
morning twilight at ~04:40 |
Low in the eastern sky during
morning twilight at ~04:40 |
Fairly high in the southern sky
during morning twilight at ~04:40 |
Fairly high in the southern sky
during morning twilight at ~04:40 |
1- |
30o S |
Low in the eastern sky during
morning twilight at ~04:00 |
Low in the eastern sky during
morning twilight at ~03:50 |
Fairly high in the eastern sky
during morning twilight at ~03:40 |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:30 |
1- |
C/2020 V2 (ZTF): An
evening comet visible in an 8-inch (20 cm) telescope
This comet begins the month in Phoenix at magnitude 11.0. Look
for a 2.5' coma, diffuse condensation at center. It should fade by about 0.8
magnitudes, moving into Grus by month's end. The best visibility is early in the
month as seen from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
1-10 |
Equator |
High at ~21:10 |
High at ~20:30 |
High in moonlight at ~19:50 |
High during evening twilight at
~19:00 |
High during evening twilight at
~19:00 |
1- |
30o S |
High at ~21:10 |
High at ~20:30 |
High in moonlight at ~20:10 |
High during evening twilight at
~20:00 |
High during evening twilight at
~20:20 |
1- |
C/2021 S3 (PANSTARRS): A
southern hemisphere morning comet visible in a 10-inch (25 cm) telescope
This comet begins the month in Centaurus at magnitude 11.9. Look
for a 1' coma, center much brighter than edges, though still diffuse. It should
brighten by about 0.6 magnitudes by month's end. The best visibility is late in
the month as seen from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
Fairly high in the eastern sky
during morning twilight at ~04:40 |
Fairly high in the eastern sky
during morning twilight at ~04:40 |
Fairly high in the eastern sky
during morning twilight at ~04:40 |
Fairly high in the eastern sky
during morning twilight at ~04:40 |
Fairly high in the southern sky
during morning twilight at ~04:40 |
1- |
30o S |
Fairly high in the eastern sky
during morning twilight at ~03:50 |
Fairly high in the eastern sky
during morning twilight at ~03:40 |
Fairly high during morning
twilight at ~03:30 |
Fairly high during morning
twilight at ~03:30 |
Fairly high during morning
twilight at ~03:30 |
1- |
29P/Schwassmann-Wachmann:
A morning comet visible in very large telescopes
This comet begins the month in Cancer at magnitude 12.5. Look
for a 2.5' coma, center much brighter than edges, though still diffuse. It
should brighten slowly. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
High during morning twilight at
~05:10 |
High at ~05:10 |
High at ~04:50 |
High during morning twilight at
~06:00 |
High in moonlight at ~05:40 |
1- |
40o
N |
High during morning twilight at
~05:00 |
High at ~05:00 |
High at ~04:50 |
High during morning twilight at
~05:30 |
High in moonlight at ~05:30 |
1- |
Equator |
High in moonlight at ~04:30 |
High during morning twilight at
~04:30 |
High at ~04:30 |
High during morning twilight at
~04:30 |
High in moonlight at ~04:30 |
1- |
30o S |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:30 |
Fairly high during morning
twilight at ~03:30 |
Fairly high in moonlight at
~03:20 |
1- |
C/2023 S2 (ATLAS): An
evening comet visible in very large telescopes
This comet begins the month in Serpens Cauda at magnitude 12.5.
Look for a 1.5' , diffuse coma with definite brightening toward center. It
should fade by about 0.9 magnitudes, moving into Aquarius by month's end. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Fairly high in the southern sky
during evening twilight at ~18:10 |
Fairly high in the southern sky
during evening twilight at ~18:00 |
Fairly high in the southern sky
during evening twilight at ~17:50 |
Fairly high during evening
twilight at ~17:40 |
Fairly high during evening
twilight at ~17:30 |
1- |
40o
N |
Fairly high during evening
twilight at ~18:20 |
Fairly high during evening
twilight at ~18:10 |
Fairly high during evening
twilight at ~18:10 |
High during evening twilight at
~18:00 |
High during evening twilight at
~18:10 |
1- |
Equator |
High during evening twilight at
~18:50 |
High during evening twilight at
~18:50 |
High during evening twilight at
~19:00 |
High during evening twilight at
~19:00 |
High during evening twilight at
~19:00 |
1- |
30o S |
Fairly high in the western sky
during evening twilight at ~19:40 |
Fairly high in the western sky
during evening twilight at ~19:50 |
Fairly high in the western sky
during evening twilight at ~19:50 |
Not visible |
Fairly high in the western sky
during evening twilight at ~20:10 |
1-23, 27- |
C/2017 K2 (PANSTARRS): A
morning comet visible in very large telescopes
This comet begins the month in Monoceros at magnitude 13.1. Look
for a 1.5' coma, center much brighter than edges, though still diffuse. It
should fade slowly. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Fairly high in the southern sky
in moonlight at ~03:40 |
Fairly high in the southern sky
at ~03:10 |
Fairly high in the southern sky
at ~02:30 |
Fairly high in the southern sky
in moonlight at ~02:30 |
Fairly high in the southern sky
in moonlight at ~01:20 |
1- |
40o
N |
High in moonlight at ~03:40 |
High at ~03:10 |
High at ~02:30 |
Fairly high in the western sky
in moonlight at ~04:40 |
High in moonlight at ~01:00 |
1- |
Equator |
High in moonlight at ~03:10 |
High at ~03:10 |
High at ~02:30 |
High at ~04:30 |
High at ~22:50 |
1- |
30o S |
High in moonlight at ~01:50 |
High at ~03:10 |
High at ~02:30 |
High during morning twilight at
~03:30 |
High at ~23:40 |
1- |
C/2023 E1 (ATLAS): A
southern hemisphere evening comet visible in very large telescopes
This comet begins the month in Piscis Austrinus at magnitude
14.0. Look for a 1.5' coma, center much brighter than edges, though still
diffuse. It should fade by about 1.4 magnitudes, moving into Aquarius by month's
end. The best visibility is early in the month as seen from the southern
hemisphere. FINDER CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
High at ~20:00 |
High at ~19:40 |
High in moonlight at ~19:20 |
Not visible |
Not visible |
1-18 |
30o S |
High at ~20:00 |
High during evening twilight at
~19:50 |
High in moonlight at ~20:10 |
Not visible |
Not visible |
1-18 |
C/2019 L3 (ATLAS): A
southern hemisphere morning comet visible in very large telescopes
This comet begins the month in Centaurus at magnitude 14.0. Look
for a 50" coma, center much brighter than edges, though still diffuse. It
should fade slowly. The best visibility is late in the month as seen from the
southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
Fairly high in the southern sky
during morning twilight at ~04:40 |
Fairly high in the southern sky
during morning twilight at ~04:40 |
Fairly high during morning
twilight at ~04:30 |
Fairly high during morning
twilight at ~04:40 |
Fairly high during morning
twilight at ~04:40 |
1- |
30o S |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:40 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:20 |
1- |
C/2020 K1 (PANSTARRS): A
southern hemisphere morning comet visible in very large telescopes
This comet begins the month in Chamaeleon at magnitude 14.2.
Look for a 40" coma, diffuse condensation at center. It should fade slowly,
moving into Octans by month's end. The best visibility is early in the month as
seen from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
30o S |
Fairly high during morning
twilight at ~03:40 |
Fairly high during morning
twilight at ~03:30 |
Fairly high during morning
twilight at ~03:20 |
Fairly high during morning
twilight at ~03:30 |
Fairly high in the southern sky
at ~23:50 |
1- |
C/2022 E2 (ATLAS): A
morning comet visible in very large telescopes
This comet begins the month in Sextans at magnitude 14.7. Look
for a 50" coma, diffuse condensation at center. It should brighten slowly,
moving into Leo by month's end. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Fairly high during morning
twilight at ~05:10 |
Fairly high during morning
twilight at ~05:20 |
High during morning twilight at
~05:40 |
High during morning twilight at
~05:50 |
High in moonlight at ~05:10 |
1- |
40o
N |
High during morning twilight at
~05:10 |
High during morning twilight at
~05:10 |
High at ~05:10 |
High during morning twilight at
~05:30 |
High in moonlight at ~05:20 |
1- |
Equator |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
High in moonlight at ~04:30 |
1- |
30o S |
Fairly high during morning
twilight at ~03:50 |
Fairly high during morning
twilight at ~03:40 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:20 |
1- |
C/2022 A2 (PANSTARRS): A
southern hemisphere evening comet visible in very large telescopes
This comet begins the month in Aquarius at magnitude 14.5. Look
for a 1.5' coma, center much brighter than edges, though still diffuse. It
should fade by about 1.1 magnitudes by month's end. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
High at ~19:40 |
High at ~19:10 |
Not visible |
Not visible |
Not visible |
1-13 |
30o S |
High during evening twilight at
~19:40 |
Not visible |
Not visible |
Not visible |
Not visible |
1-10 |
C/2019 U5 (PANSTARRS): A
southern hemisphere morning comet visible in very large telescopes
This comet begins the month in Hydra at magnitude 14.5. Look for
a 55" coma, center much brighter than edges, though still diffuse. It
should fade slowly, moving into Antlia by month's end. The best visibility is
late in the month as seen from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
Fairly high during morning
twilight at ~04:30 |
Fairly high during morning
twilight at ~04:30 |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
High during morning twilight at
~04:30 |
2-25 |
30o S |
Fairly high during morning
twilight at ~03:40 |
High during morning twilight at
~03:40 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:20 |
3-26 |
C/2019 T4 (ATLAS): A
far-northern evening comet visible in very large telescopes
This comet begins the month in Hercules at magnitude 14.7. Look
for a 50" coma, diffuse condensation at center. It should fade slowly.
FINDER CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Fairly high in the western sky
during evening twilight at ~18:10 |
Fairly high in the western sky
during evening twilight at ~17:50 |
Not visible |
Not visible |
Not visible |
1-9, 11-11 |
40o
N |
Fairly high in the western sky
during evening twilight at ~18:10 |
Not visible |
Not visible |
Not visible |
Not visible |
1-5 |
Equator |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
30o S |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
C/2023 A3
(Tsuchinshan-ATLAS): A far-northern morning comet visible in very large
telescopes
This comet begins the month in Virgo at magnitude 15.3. Look for
a 25" coma, virtually invisible. It should brighten by about 0.5 magnitudes
by month's end. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Low in the eastern sky during
morning twilight at ~06:20 |
26- |
40o
N |
Not visible |
Not visible |
Not visible |
Low in the eastern sky during
morning twilight at ~05:40 |
Low in the eastern sky during
morning twilight at ~05:50 |
24-25, 28- |
Equator |
Not visible |
Not visible |
Not visible |
Not visible |
Low in the eastern sky during
morning twilight at ~04:50 |
|
30o S |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
C/2021 G2 (Atlas): A
southern hemisphere morning comet visible in very large telescopes
This comet begins the month in Hydra at magnitude 15.0. Look for
a 1' coma. It should brighten slowly. The best visibility is late in the month
as seen from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
Equator |
Not visible |
Fairly high in the eastern sky
during morning twilight at ~04:40 |
Fairly high during morning
twilight at ~04:30 |
Fairly high during morning
twilight at ~04:40 |
High during morning twilight at
~04:40 |
11-25 |
30o S |
Not visible |
Not visible |
Fairly high during morning
twilight at ~03:30 |
High during morning twilight at
~03:30 |
High during morning twilight at
~03:20 |
14-26, 29- |
C/2022 JK5 (PANSTARRS): An
evening comet visible in very large telescopes
This comet begins the month in Aquarius at magnitude 14.9. Look
for a 45" coma, diffuse condensation at center. It should fade by about 0.6
magnitudes by month's end. The best visibility is early in the month as seen
from the southern hemisphere. FINDER
CHART
Latitude |
Visibility November 4 |
Visibility November 11 |
Visibility November 18 |
Visibility November 25 |
Visibility December 2 |
Nights Visible |
55o
N |
Not visible |
Not visible |
Not visible |
Not visible |
Not visible |
|
40o
N |
Fairly high in the southern sky
at ~20:40 |
Fairly high in the southern sky
at ~20:10 |
Fairly high in the southern sky
in moonlight at ~19:50 |
Not visible |
Not visible |
1-18 |
Equator |
High at ~20:40 |
High at ~20:10 |
High in moonlight at ~19:50 |
Not visible |
High during evening twilight at
~19:00 |
1-20, 27- |
30o S |
High at ~20:40 |
High at ~20:10 |
High in moonlight at ~20:10 |
Not visible |
High during evening twilight at
~20:20 |