2023 GC2 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.86 AU to 1.15 AU from the Sun; one orbit takes 368 days. Orbit from the JPL solution of 29 July 2024.
Where is it now
- Distance from Sun
- 0.984 AU
- True anomaly
- 269.9°
- Distance from Earth
- 0.631 AU
- As of
- 3 November 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.
In the sky
- Right ascension
- 19h 33m 08s
- Declination
- -18° 56′ 23″
- Constellation
- Sagittarius
- Distance from Earth
- 0.63 AU
- Elongation from the Sun
- 70.64° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
From your location
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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
- 1.005 AU
- Eccentricity
- 0.1467
- Inclination
- 6.9°
- Orbital period
- 368 days
- Perihelion
- 0.857 AU
- Aphelion
- 1.152 AU
- Longitude of ascending node
- 198.81°
- Argument of periapsis
- 255.26°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 5.3 LD
- 0.0136 AU
- Tisserand (Jupiter)
- 6.041
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 21
- Data arc
- 369 days
- First observed
- 14 April 2023
- Last observed
- 17 April 2024
- Residual RMS
- 0.62 ″
- Solution · Otto Matic
- 29 July 2024
Visual & observation
- Absolute magnitude (H)
- 27.29
Discovery & classification
Close approaches 129 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-04-07 14:15 UTC close approach of 2023 GC2. Catalogue miss distance 50.1 LD · 1.93 × 10⁷ km. The curve is the geocentric path from 2027-04-04 to 2027-04-10, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2027-04-07 14:15:00 | Earth | 0.1288 AU | 50.1 LD | 8.5 km/s |
| 2028-04-08 21:09:00 | Earth | 0.1798 AU | 70.0 LD | 9.9 km/s |
| 2029-04-11 05:42:00 | Earth | 0.2332 AU | 90.8 LD | 11.4 km/s |
| 2030-04-13 22:15:00 | Earth | 0.2885 AU | 112.3 LD | 13 km/s |
| 2031-04-16 14:38:00 | Earth | 0.345 AU | 134.3 LD | 14.6 km/s |
| 2032-04-18 13:20:00 | Earth | 0.4023 AU | 156.6 LD | 16.3 km/s |
| 2033-04-21 10:34:00 | Earth | 0.4596 AU | 178.9 LD | 18 km/s |
| 2116-09-02 13:27:00 | Earth | 0.4599 AU | 179.0 LD | 17.8 km/s |
| 2117-09-05 17:23:00 | Earth | 0.4028 AU | 156.8 LD | 16.2 km/s |
| 2118-09-08 22:14:00 | Earth | 0.3463 AU | 134.8 LD | 14.5 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB