Comet 28P/Neujmin
Comet 28P/Neujmin is in the constellation of
Cancer,
at a distance of
Finder Charts
View interactive star map
High precision deep sky finder chart, 60 arcmin wide, showing where Comet 28P/Neujmin is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet 28P/Neujmin?, a page that provides all the information needed to find Comet 28P/Neujmin in the sky and additional links to sky charts.
Celestial Coordinates
Apparent
J2000
Additional Information
The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.
Rise and Set Times
Today's rise, transit and set times of Comet 28P/Neujmin from Greenwich, UK (all times relative to the local timezone Europe/London):
- 28P/Neujmin is above the horizon from Greenwich, UK.
- Right now it is placed in the West-South-West direction at an altitude of 51.85° above the horizon.
- Given its current magnitude, 28P/Neujmin is visible only through long exposure photography.
- Go to interactive sky chart
If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.
Distance from Earth
The distance of Comet 28P/Neujmin from Earth is currently
The following chart shows the distance of Comet 28P/Neujmin from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 28P/Neujmin from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach
Between 1 January 2000 and 31 December 2099, the closest approach of Comet 28P/Neujmin to Earth happens on Sun Sep 11 2039 at a distance of 0.786576 Astronomical Units, or 117,670,076 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 28P/Neujmin, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Orbital Elements
The following table lists the orbital elements of Comet 28P/Neujmin at epoch 12 April 2023 00:00 UTC (JD: 2460047.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.77356244 |
| Orbit inclination | i | 14.31027236° |
| Perihelion distance | q | 1.58091783 AU 236,501,942 km |
| Aphelion distance | Q |
12.38247092 AU 1,852,391,287 km |
| Semi-major axis | a |
6.98169438 AU 1,044,446,615 km |
| Orbital period | period |
18.4480 years 6,738.1345 days |
| Date of perihelion transit | Tp | 2021-Mar-11 18:12:43 2,459,285.2588 JD |
| Next perihelion transit | 2039-Aug-22 21:26 2,466,023.3934 JD |
|
| Argument of perihelion | peri | 347.46742962325° |
| Longitude of the ascending node | node | 346.34465408626° |
| Mean anomaly | M | 40.724449505067° |
| Mean motion | n | 0.05342725°/day |
Orbit Visualization
View Comet 28P/Neujmin in the 3D Solar System Simulator
15 Days Ephemeris
The following table lists the ephemerides of Comet 28P/Neujmin computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2025 Apr 05 | 08h 40m 02s | +27° 30’ 20” | 22.42 | Cancer |
| 2025 Apr 06 | 08h 39m 57s | +27° 29’ 29” | 22.43 | Cancer |
| 2025 Apr 07 | 08h 39m 51s | +27° 28’ 36” | 22.43 | Cancer |
| 2025 Apr 08 | 08h 39m 47s | +27° 27’ 42” | 22.44 | Cancer |
| 2025 Apr 09 | 08h 39m 42s | +27° 26’ 46” | 22.44 | Cancer |
| 2025 Apr 10 | 08h 39m 39s | +27° 25’ 48” | 22.45 | Cancer |
| 2025 Apr 11 | 08h 39m 35s | +27° 24’ 49” | 22.45 | Cancer |
| 2025 Apr 12 | 08h 39m 32s | +27° 23’ 48” | 22.46 | Cancer |
| 2025 Apr 13 | 08h 39m 30s | +27° 22’ 46” | 22.46 | Cancer |
| 2025 Apr 14 | 08h 39m 28s | +27° 21’ 42” | 22.47 | Cancer |
| 2025 Apr 15 | 08h 39m 27s | +27° 20’ 37” | 22.47 | Cancer |
| 2025 Apr 16 | 08h 39m 26s | +27° 19’ 30” | 22.48 | Cancer |
| 2025 Apr 17 | 08h 39m 25s | +27° 18’ 21” | 22.48 | Cancer |
| 2025 Apr 18 | 08h 39m 25s | +27° 17’ 11” | 22.49 | Cancer |
Additional Resources
- Position and finder charts (see also Where is Comet 28P/Neujmin?)
- Distance from Earth (see also How far is Comet 28P/Neujmin from Earth?)
- When does Comet 28P/Neujmin rise and set?
- Brightness (see also How bright is Comet 28P/Neujmin?)
- Orbital elements. Detailed information about Comet 28P/Neujmin orbital parameters.
- Interactive orbit visualization. 3d visualization showing the orbit of Comet 28P/Neujmin with respect to the major Solar System objects.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet 28P/Neujmin for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Comet 28P/Neujmin in the sky from your location.
- Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet 28P/Neujmin with your telescope or on your astrophotographies.