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Transit: 12:14 
Sunset: 17:14
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Dwarf Planets and Asteroids » 

Asteroid 1998 OR2

Above the horizon.  Rise: 8:18 | Tran: 13:49 | Set: 19:20
Alt: 23.13°   Az: 225.59°   Direction: South-West

Asteroid 1998 OR2 is in the constellation of Aquarius, at a distance of 635,489,229.0 kilometers from Earth. The current Right Ascension is 23h 32m 57s and the Declination is -05° 21’ 50” (apparent coordinates). The magnitude of Asteroid 1998 OR2 is 22.34 (data provided by JPL Horizons).

Finder Charts

Map showing Asteroid 1998 OR2 in Aquarius on February, 15 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid 1998 OR2 in Aquarius 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 Asteroid 1998 OR2 is right now. Click on the image to see a more detailed fullscreen tracker view.

1998 OR2
RA: 23h 31m 39s
Dec: -05° 30’ 10”
Deep sky finder chart for Asteroid 1998 OR2. Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Asteroid 1998 OR2?, a page that provides all the information needed to find Asteroid 1998 OR2 in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

23h 32m 57s
-05° 21’ 50”
02h 45m 09s
02h 18m 06s

J2000

23h 31m 39s
-05° 30’ 10”

Additional Information

Aquarius
22.34

Rise and Set Times

Today's rise, transit and set times of Asteroid 1998 OR2 from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 95.4°
Max altitude: 33.1°
Azimuth: 264.7°
  • 1998 OR2 is above the horizon from Greenwich, UK.
  • Right now it is placed in the South-West direction at an altitude of 23.13° above the horizon.
  • Given its current magnitude, 1998 OR2 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 Asteroid 1998 OR2 from Earth is currently 635,489,229.0 kilometers, equivalent to 4.2479831165 Astronomical Units. Light takes 35m 19.764s to travel from Asteroid 1998 OR2 and arrive to us.

635,489,229.0
4.2479831165
35m 19.764s

The following chart shows the distance of Asteroid 1998 OR2 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 Asteroid 1998 OR2 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 1998 OR2 from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach

Between 1 January 2013 and 30 December 2100, the closest approach of Asteroid 1998 OR2 to Earth happens on Mon Apr 17 2079 at a distance of 0.012028 Astronomical Units, or 1,799,340 kilometers:

Mon Apr 17 2079
1,799,340
0.012028

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 Asteroid 1998 OR2, 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 Asteroid 1998 OR2 as a function of time

Orbital Elements

The following table lists the orbital elements of Asteroid 1998 OR2 at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.57540175
Orbit inclination i 5.87820372°
Perihelion distance q 1.01074111 AU
151,204,719 km
Aphelion distance Q 3.75018813 AU
561,020,160 km
Semi-major axis a 2.38046462 AU
356,112,439 km
Orbital period period 3.6728 years
1,341.5011 days
Date of perihelion transit Tp 2023-Dec-19 12:27:40
2,460,298.0192 JD
Next perihelion transit 2027-Aug-22 00:29
2,461,639.5203 JD
Argument of perihelion peri 174.5804742614°
Longitude of the ascending node node 26.941546107138°
Mean anomaly M 280.1589026554°
Mean motion n 0.26835610°/day

Orbit Visualization

Orbit Diagram of Asteroid 1998 OR2
View Asteroid 1998 OR2 in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid 1998 OR2 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 23h 24m 29s -06° 21’ 40” 22.35 Aquarius
2025 Feb 09 23h 25m 35s -06° 13’ 55” 22.35 Aquarius
2025 Feb 10 23h 26m 41s -06° 06’ 08” 22.35 Aquarius
2025 Feb 11 23h 27m 47s -05° 58’ 22” 22.35 Aquarius
2025 Feb 12 23h 28m 53s -05° 50’ 35” 22.35 Aquarius
2025 Feb 13 23h 29m 59s -05° 42’ 48” 22.34 Aquarius
2025 Feb 14 23h 31m 05s -05° 35’ 01” 22.34 Aquarius
2025 Feb 15 23h 32m 11s -05° 27’ 14” 22.34 Aquarius
2025 Feb 16 23h 33m 17s -05° 19’ 25” 22.34 Aquarius
2025 Feb 17 23h 34m 23s -05° 11’ 38” 22.34 Aquarius
2025 Feb 18 23h 35m 30s -05° 03’ 50” 22.33 Aquarius
2025 Feb 19 23h 36m 36s -04° 56’ 01” 22.33 Aquarius
2025 Feb 20 23h 37m 42s -04° 48’ 13” 22.33 Aquarius
2025 Feb 21 23h 38m 49s -04° 40’ 25” 22.33 Aquarius

Additional Resources