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Transit: 12:14 
Sunset: 17:14
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Comets » 

Comet 28P/Neujmin

Above the horizon.  Rise: 14:27 | Tran: 23:08 | Set: 7:52
Alt: 10.58°   Az: 301.30°   Direction: West-North-West

Comet 28P/Neujmin is in the constellation of Cancer, at a distance of 1,264,998,817.0 kilometers from Earth. The current Right Ascension is 08h 53m 18s and the Declination is +27° 30’ 02” (apparent coordinates). The predicted magnitude of Comet 28P/Neujmin is 22.21 (data provided by JPL Horizons).

Finder Charts

Map showing Comet 28P/Neujmin in Cancer on February, 15 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet 28P/Neujmin in Cancer on February, 15 2025. Field of view: 15x9 degrees. View in interactive sky chart

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.

28P/Neujmin
RA: 08h 51m 48s
Dec: +27° 35’ 46”
Deep sky finder chart for Comet 28P/Neujmin. Field of view: 60x40 arcmins. View in deep sky object tracker

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

08h 53m 18s
+27° 30’ 02”
07h 15m 00s
16h 08m 19s

J2000

08h 51m 48s
+27° 35’ 46”

Additional Information

Cancer
n/a
n/a
n/a
n/a
22.21

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):

Azimuth: 62.5°
Max altitude: 66.0°
Azimuth: 297.5°
  • 28P/Neujmin is above the horizon from Greenwich, UK.
  • Right now it is placed in the West-North-West direction at an altitude of 10.58° 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 1,264,998,817.0 kilometers, equivalent to 8.4559948018 Astronomical Units. Light takes 1h 10m 19.582s to travel from Comet 28P/Neujmin and arrive to us.

1,264,998,817.0
8.4559948018
1h 10m 19.582s

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.

Chart of the distance of Comet 28P/Neujmin from Earth in Astronomical Units (au)

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:

Sun Sep 11 2039
117,670,076
0.786576

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.

Chart of the magnitude of Comet 28P/Neujmin as a function of time

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

Orbit Diagram of Comet 28P/Neujmin
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 Feb 08 08h 56m 19s +27° 22’ 32” 22.19 Cancer
2025 Feb 09 08h 55m 54s +27° 23’ 39” 22.20 Cancer
2025 Feb 10 08h 55m 29s +27° 24’ 46” 22.20 Cancer
2025 Feb 11 08h 55m 03s +27° 25’ 51” 22.20 Cancer
2025 Feb 12 08h 54m 38s +27° 26’ 52” 22.20 Cancer
2025 Feb 13 08h 54m 13s +27° 27’ 53” 22.21 Cancer
2025 Feb 14 08h 53m 49s +27° 28’ 51” 22.21 Cancer
2025 Feb 15 08h 53m 24s +27° 29’ 47” 22.21 Cancer
2025 Feb 16 08h 53m 01s +27° 30’ 41” 22.21 Cancer
2025 Feb 17 08h 52m 36s +27° 31’ 33” 22.22 Cancer
2025 Feb 18 08h 52m 12s +27° 32’ 22” 22.22 Cancer
2025 Feb 19 08h 51m 49s +27° 33’ 09” 22.22 Cancer
2025 Feb 20 08h 51m 25s +27° 33’ 54” 22.23 Cancer
2025 Feb 21 08h 51m 02s +27° 34’ 37” 22.23 Cancer

Additional Resources