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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:45  ☀️ Transit: 13:03  🌅 Sunset: 19:23

Comet 28P/Neujmin 1

Comet 28P/Neujmin 1 is currently in the constellation of Gemini. The current Right Ascension of Comet 28P/Neujmin 1 is 06h 58m 32s and the Declination is +34° 56’ 02” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 28P/Neujmin 1 is 20.81 (JPL).

06h 58m 32s
+34° 56’ 02”

Today's rise, transit and set times of Comet 28P/Neujmin 1 from Greenwich, United Kingdom [change] (all times relative to the local timezone Europe/London):

Azimuth: 55.1°
Max altitude: 73.4°
Azimuth: 304.9°
  • 28P/Neujmin 1 is above the horizon from Greenwich, United Kingdom [change].
  • Right now it is placed in the North-East direction at an altitude of 17° above the horizon.
  • Given its current magnitude, 28P/Neujmin 1 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.

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 Gemini on March, 28 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 28P/Neujmin 1 in Gemini on March, 28 2023
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: 06h 58m 32s
Dec: +34° 56’ 02”
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 935,168,466 kilometers, equivalent to 6.251215 Astronomical Units. Light takes 51 minutes and 59.3862 seconds to travel from Comet 28P/Neujmin 1 and arrive to us.

51 minutes and 59.3862 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.

Chart of the distance of Comet 28P/Neujmin 1 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 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 1 January 2013 and 30 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 117,669,931 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 20.81.


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.

Chart of the magnitude of Comet 28P/Neujmin 1 as a function of time

Comet 28P/Neujmin 1 Orbital Elements

The following table lists the orbital elements of Comet 28P/Neujmin 1 at epoch 05 February 2016 00:00 UTC (JD: 2457424.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.77244794
Orbit inclination i 14.31693142°
Perihelion distance q 1.57863617 AU
236,160,610 km
Aphelion distance Q 12.29630887 AU
1,839,501,628 km
Semi-major axis a 6.93747252 AU
1,037,831,119 km
Orbital period period 18.2730 years
6,674.2173 days
Date of perihelion transit Tp 2021-Mar-15 14:58:34
2,459,289.1240 JD
Next perihelion transit 2039-Jun-23 20:11
2,465,963.3413 JD
Argument of perihelion peri 347.58180991202°
Longitude of the ascending node node 346.35031736435°
Mean anomaly M 259.42421470812°
Mean motion n 0.05393891°/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
2023 Mar 21 06h 57m 52s +35° 14’ 09” 20.74 Gemini
2023 Mar 22 06h 57m 56s +35° 11’ 45” 20.75 Gemini
2023 Mar 23 06h 58m 00s +35° 09’ 20” 20.76 Gemini
2023 Mar 24 06h 58m 04s +35° 06’ 56” 20.77 Gemini
2023 Mar 25 06h 58m 09s +35° 04’ 31” 20.78 Gemini
2023 Mar 26 06h 58m 14s +35° 02’ 04” 20.79 Gemini
2023 Mar 27 06h 58m 22s +34° 59’ 39” 20.80 Gemini
2023 Mar 28 06h 58m 28s +34° 57’ 12” 20.81 Gemini
2023 Mar 29 06h 58m 36s +34° 54’ 47” 20.82 Gemini
2023 Mar 30 06h 58m 45s +34° 52’ 19” 20.83 Gemini
2023 Mar 31 06h 58m 55s +34° 49’ 53” 20.84 Gemini
2023 Apr 01 06h 59m 06s +34° 47’ 26” 20.84 Gemini
2023 Apr 02 06h 59m 17s +34° 44’ 58” 20.85 Gemini
2023 Apr 03 06h 59m 29s +34° 42’ 32” 20.86 Gemini