Comet 22P/Kopff passes perihelion

Dominic Ford, Editor
From the Comets feed


Objects: 22P/Kopff

Comet 22P/Kopff will make its closest approach to the Sun on 19 August, at a distance of 1.56 AU.

From South El Monte on the day of perihelion it will become visible at around 20:37 (PST), 32° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:14.

The events that comprise the 1996 apparition of 22P/Kopff are as follows:

Date Event
19 Aug 1996Comet 22P/Kopff passes perihelion

The table below lists the times when 22P/Kopff will be visible from South El Monte day-by-day through its apparition:

Date Constellation Comet visibility
29 Jul 1996LibraVisible from 21:03 until 23:02
Highest at 21:03, 38° above SW horizon
31 Jul 1996LibraVisible from 21:01 until 22:56
Highest at 21:01, 37° above SW horizon
02 Aug 1996LibraVisible from 20:58 until 22:50
Highest at 20:58, 37° above SW horizon
04 Aug 1996LibraVisible from 20:56 until 22:44
Highest at 20:56, 36° above SW horizon
06 Aug 1996LibraVisible from 20:54 until 22:38
Highest at 20:54, 36° above SW horizon
08 Aug 1996LibraVisible from 20:52 until 22:33
Highest at 20:52, 35° above SW horizon
10 Aug 1996LibraVisible from 20:49 until 22:27
Highest at 20:49, 35° above SW horizon
12 Aug 1996LibraVisible from 20:47 until 22:22
Highest at 20:47, 34° above SW horizon
14 Aug 1996LibraVisible from 20:44 until 22:16
Highest at 20:44, 34° above SW horizon
16 Aug 1996LibraVisible from 20:41 until 22:11
Highest at 20:41, 33° above SW horizon
18 Aug 1996ScorpiusVisible from 20:39 until 22:06
Highest at 20:39, 33° above SW horizon
20 Aug 1996ScorpiusVisible from 20:36 until 22:01
Highest at 20:36, 32° above SW horizon
22 Aug 1996ScorpiusVisible from 20:33 until 21:56
Highest at 20:33, 32° above SW horizon
24 Aug 1996ScorpiusVisible from 20:30 until 21:51
Highest at 20:30, 32° above SW horizon
26 Aug 1996OphiuchusVisible from 20:28 until 21:47
Highest at 20:28, 31° above SW horizon
28 Aug 1996OphiuchusVisible from 20:25 until 21:42
Highest at 20:25, 31° above SW horizon
30 Aug 1996OphiuchusVisible from 20:22 until 21:38
Highest at 20:22, 31° above SW horizon
01 Sep 1996OphiuchusVisible from 20:19 until 21:33
Highest at 20:19, 31° above SW horizon
03 Sep 1996OphiuchusVisible from 20:16 until 21:29
Highest at 20:16, 30° above SW horizon
05 Sep 1996OphiuchusVisible from 20:13 until 21:25
Highest at 20:13, 30° above SW horizon
07 Sep 1996OphiuchusVisible from 20:10 until 21:21
Highest at 20:10, 30° above SW horizon

A more detailed table of 22P/Kopff's position on each night is available here. A diagram of the orbit of 22P/Kopff is available here.

Finder chart

The chart below shows the path of 22P/Kopff over the course of its apparition, as calculated from the orbital elements published by the Minor Planet Center (MPC). It is available for download, either on dark background, in PNG, PDF or SVG formats, or on a light background, in PNG, PDF or SVG formats. It was produced using StarCharter.

Comet brightnesses

Comets are intrinsically highly unpredictable objects, since their brightness depends on the scattering of sunlight from dust particles in the comet's coma and tail. This dust is continually streaming away from the comet's nucleus, and its density at any particular time is governed by the rate of sublimation of the ice in the comet's nucleus, as it is heated by the Sun's rays. It also depends on the amount of dust that is mixed in with that ice. This is very difficult to predict in advance, and can be highly variable even between successive apparitions of the same comet.

In consequence, while the future positions of comets are usually known with a high degree of confidence, their future brightnesses are not. For most comets, we do not publish any magnitude estimates at all. For the few comets where we do make estimates, we generally prefer the BAA's magnitude parameters to those published by the Minor Planet Center, since they are typically updated more often.

No estimate for the brightness of comet 22P/Kopff is currently available.

The comet's position at perihelion will be:

Object Right Ascension Declination Constellation Magnitude
Comet 22P/Kopff 16h06m50s 18°49'S Scorpius 8.9

The coordinates are given in J2000.0.

The sky on 23 Feb 2026

The sky on 23 February 2026
Sunrise
06:25
Sunset
17:42
Twilight ends
19:06
Twilight begins
05:02


Waxing Gibbous

52%

7 days old

Planets
Rise Culm. Set
Mercury 07:03 13:03 19:02
Venus 07:04 12:49 18:33
Moon 09:56 17:18 00:47
Mars 06:02 11:25 16:48
Jupiter 13:32 20:41 03:51
Saturn 07:44 13:43 19:41
All times shown in PST.

Source

This event was automatically generated on the basis of orbital elements published by the Minor Planet Center (MPC) , and is updated whenever new elements become available. It was last updated on 15 Dec 2025.

Image credit

© Andy Roberts 1997. Pictured comet is C/1995 O1 Hale-Bopp.

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