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Asteroid Near-Earth

2002 JR100

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(2002 JR100)

Where is it now

Distance from Sun
0.912 AU
True anomaly
254.86°
Distance from Earth
0.611 AU
As of
21 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.995 AU from the Sun Earth 2002 JR100 — 0.912 AU from the Sun 2002 JR100
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2002 JR100 is 0.611 AU from Earth today (5.1 light-minutes).

In the sky

Right ascension
18h 11m 33s
Declination
-20° 37′ 51″
Constellation
Sagittarius
Distance from Earth
0.61 AU
Elongation from the Sun
63.77° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
0.923 AU
Eccentricity
0.299
Inclination
3.7°
Orbital period
324.1 days
Perihelion
0.647 AU
Aphelion
1.199 AU
Longitude of ascending node
202.21°
Argument of periapsis
254.22°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 7.5 LD
0.0193 AU
Tisserand (Jupiter)
6.437

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
165
Data arc
24.03 years
First observed
14 May 2002
Last observed
24 May 2026
Residual RMS
0.55 ″
Solution · Otto Matic
5 June 2026

Physical properties

Mean radius
0.01 km

Visual & observation

Geometric albedo
0.441
Absolute magnitude (H)
24.36

Discovery & classification

Aten Near-Earth Object

Close approaches 98 on record

Flyby geometry
Ecliptic flyby of 2002 JR100 at 2027-08-26 05:51 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-08-26 05:51 UTC close approach of 2002 JR100. Catalogue miss distance 33.8 LD · 1.3 × 10⁷ km. The curve is the geocentric path from 2027-08-23 to 2027-08-29, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 33.8 LD · 1.3 × 10⁷ km 2027-08-26 05:51 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-08-26 05:51 UTC close approach of 2002 JR100. Catalogue miss distance 33.8 LD · 1.3 × 10⁷ km. The curve is the geocentric path from 2027-08-23 to 2027-08-29, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2027-08-26 05:51:00 Earth 0.0868 AU 33.8 LD 10.3 km/s
2028-09-04 03:53:00 Venus 0.0109 AU 4.2 LD 9.2 km/s
2034-05-26 23:46:00 Earth 0.1576 AU 61.3 LD 6 km/s
2035-08-21 22:59:00 Earth 0.19 AU 73.9 LD 13.7 km/s
2036-08-25 06:16:00 Venus 0.1173 AU 45.7 LD 14.5 km/s
2042-06-22 18:57:00 Earth 0.1933 AU 75.2 LD 6.5 km/s
2043-01-07 00:05:00 Venus 0.0773 AU 30.1 LD 8.5 km/s
2050-07-17 14:44:00 Earth 0.1831 AU 71.3 LD 6.3 km/s
2050-11-27 20:44:00 Venus 0.09 AU 35.0 LD 7.6 km/s
2057-05-02 12:55:00 Earth 0.1255 AU 48.8 LD 11.9 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources