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🌎  Greenwich, United Kingdom [change]

Comet 28P/Neujmin 1

Comet 28P/Neujmin 1 is currently in the constellation of Perseus. The current Right Ascension of Comet 28P/Neujmin 1 is 04h 42m 25s and the Declination is +42° 45’ 44” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 28P/Neujmin 1 is 17.43 (JPL).

Summary of key facts about Comet 28P/Neujmin 1 [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

04h 42m 25s
+42° 45’ 44”
  • 28P/Neujmin 1 is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the North-East direction at an altitude of 22° above the horizon.
  • Given its current magnitude, 28P/Neujmin 1 is visible only through long exposure photography.
  • See also 28P/Neujmin 1 rise and set times.
  • 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.

Additional information about Comet 28P/Neujmin 1 available on TheSkyLive:

Available Resources

Comet 28P/Neujmin 1 Position and Finder Charts

Below we provide Comet 28P/Neujmin 1 finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet 28P/Neujmin 1 in Perseus on December, 04 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 28P/Neujmin 1 in Perseus on December, 04 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 28P/Neujmin 1 is right now. Click on the image to see a more detailed fullscreen tracker view.

28P/Neujmin 1
RA: 04h 42m 25s
Dec: +42° 45’ 44”
Deep sky finder chart for Comet 28P/Neujmin 1
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 28P/Neujmin 1?, a page that provides all the information needed to find Comet 28P/Neujmin 1 in the sky and additional links to sky charts.

Comet 28P/Neujmin 1 Distance from Earth

The distance of Comet 28P/Neujmin 1 from Earth is currently 346,515,204 kilometers, equivalent to 2.316311 Astronomical Units. Light takes 19 minutes and 15.8503 seconds to travel from Comet 28P/Neujmin 1 and arrive to us.

19 minutes and 15.8503 seconds

The following chart shows the distance of Comet 28P/Neujmin 1 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.

Distance of Comet 28P/Neujmin 1 from Earth between January 2013 and December 2100

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 1 from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 28P/Neujmin 1 to Earth

Between January 2013 and December 2100, the closest approach of Comet 28P/Neujmin 1 to Earth happens on Sun Sep 11 2039 at a distance of 0.786575 Astronomical Units, or 117,669,919 kilometers:

Sun Sep 11 2039

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet 28P/Neujmin 1 brightness

The current visual magnitude of Comet 28P/Neujmin 1 is 17.43.


The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated 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.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 28P/Neujmin 1, 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.

Predicted magnitude of Comet 28P/Neujmin 1 between January 2013 and December 2100

Comet 28P/Neujmin 1 rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Comet 28P/Neujmin 1 is circumpolar and transits at 23:46 UTC (altitude: 81.3°)

The rise and set times are defined as the time at which the upper limb of Comet 28P/Neujmin 1 touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 28P/Neujmin 1 Orbital Elements

The following table lists the orbital elements of Comet 28P/Neujmin 1 at epoch 15 June 2014 00:00 UTC (JD: 2456824.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.77245272
Orbit inclination i 14.32317480°
Perihelion distance q 1.57704948 AU
235,923,244 km
Aphelion distance Q 12.28424118 AU
1,837,696,328 km
Semi-major axis a 6.93064533 AU
1,036,809,786 km
Orbital period period 18.2460 years
6,664.3675 days
Date of perihelion transit Tp 2021-Mar-18 04:26:04
2,459,291.6848 JD
Next perihelion transit 2039-Jun-16 13:15
2,465,956.0523 JD
Argument of perihelion peri 347.65645918646°
Longitude of the ascending node node 346.34988342216°
Mean anomaly M 226.72605966576°
Mean motion n 0.05401863°/day

Visualization of Comet 28P/Neujmin 1 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 28P/Neujmin 1 with respect of the Sun and the orbits of the major planets. The position of Comet 28P/Neujmin 1 and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Comet 28P/Neujmin 1
View Comet 28P/Neujmin 1 in the 3D Solar System Simulator

Comet 28P/Neujmin 1 15 Days Ephemeris

The following table lists the ephemerides of Comet 28P/Neujmin 1 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 28P/Neujmin 1 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Nov 27 04h 51m 26s +43° 00’ 33” 17.35 Auriga
2021 Nov 28 04h 50m 16s +42° 59’ 17” 17.36 Perseus
2021 Nov 29 04h 49m 05s +42° 57’ 50” 17.37 Perseus
2021 Nov 30 04h 47m 53s +42° 56’ 09” 17.38 Perseus
2021 Dec 01 04h 46m 42s +42° 54’ 18” 17.39 Perseus
2021 Dec 02 04h 45m 32s +42° 52’ 14” 17.40 Perseus
2021 Dec 03 04h 44m 21s +42° 49’ 59” 17.41 Perseus
2021 Dec 04 04h 43m 11s +42° 47’ 32” 17.42 Perseus
2021 Dec 05 04h 42m 02s +42° 44’ 56” 17.44 Perseus
2021 Dec 06 04h 40m 54s +42° 42’ 06” 17.45 Perseus
2021 Dec 07 04h 39m 47s +42° 39’ 09” 17.46 Perseus
2021 Dec 08 04h 38m 39s +42° 36’ 00” 17.47 Perseus
2021 Dec 09 04h 37m 32s +42° 32’ 40” 17.48 Perseus
2021 Dec 10 04h 36m 26s +42° 29’ 12” 17.50 Perseus