2017 YC2 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.94 AU to 1.13 AU from the Sun; one orbit takes 383.3 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.082 AU
- True anomaly
- 235.35°
- Distance from Earth
- 2.052 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
- 15h 13m 28s
- Declination
- -13° 25′ 51″
- Constellation
- Libra
- Distance from Earth
- 2.05 AU
- Elongation from the Sun
- 8.52° — too close to the Sun to observe
Visible from both hemispheres.
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.
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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
- 1.033 AU
- Eccentricity
- 0.0944
- Inclination
- 10.59°
- Orbital period
- 383.3 days
- Perihelion
- 0.935 AU
- Aphelion
- 1.13 AU
- Longitude of ascending node
- 107.74°
- Argument of periapsis
- 252.01°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 7.9 LD
- 0.0202 AU
- Tisserand (Jupiter)
- 5.91
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 77
- Data arc
- 383 days
- First observed
- 22 December 2017
- Last observed
- 9 January 2019
- Residual RMS
- 0.39 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 23.5
Discovery & classification
Close approaches 73 on record
Top-down view of the ecliptic, Earth at the centre, for the 2036-06-06 00:57 UTC close approach of 2017 YC2. Catalogue miss distance 192.6 LD · 7.4 × 10⁷ km. The curve is the geocentric path from 2036-06-03 to 2036-06-09, 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 |
|---|---|---|---|---|
| 2036-06-06 00:57:00 | Earth | 0.4949 AU | 192.6 LD | 18.1 km/s |
| 2037-06-22 12:13:00 | Earth | 0.1965 AU | 76.5 LD | 10 km/s |
| 2038-07-21 17:53:00 | Earth | 0.1033 AU | 40.2 LD | 5.6 km/s |
| 2039-01-16 05:48:00 | Earth | 0.1271 AU | 49.5 LD | 5.8 km/s |
| 2039-12-24 02:22:00 | Earth | 0.1792 AU | 69.7 LD | 9.3 km/s |
| 2040-12-28 16:23:00 | Earth | 0.4777 AU | 185.9 LD | 17.8 km/s |
| 2058-06-21 10:36:00 | Earth | 0.2177 AU | 84.7 LD | 10.6 km/s |
| 2059-07-18 14:46:00 | Earth | 0.0857 AU | 33.3 LD | 5.6 km/s |
| 2060-01-19 11:47:00 | Earth | 0.1389 AU | 54.0 LD | 5.8 km/s |
| 2060-12-23 01:54:00 | Earth | 0.1667 AU | 64.9 LD | 9 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