2004 YG1 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.85 AU to 1.17 AU from the Sun; one orbit takes 370.7 days. Orbit from the JPL solution of 14 April 2021.
Where is it now
- Distance from Sun
- 1.077 AU
- True anomaly
- 122.66°
- Distance from Earth
- 1.266 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
- 18h 22m 25s
- Declination
- -09° 22′ 47″
- Constellation
- Scutum
- Distance from Earth
- 1.27 AU
- Elongation from the Sun
- 55.38° — near the Sun — look low at dusk or dawn
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
- 1.01 AU
- Eccentricity
- 0.1588
- Inclination
- 19.82°
- Orbital period
- 370.7 days
- Perihelion
- 0.85 AU
- Aphelion
- 1.17 AU
- Longitude of ascending node
- 271.71°
- Argument of periapsis
- 293.89°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 24.0 LD
- 0.0617 AU
- Tisserand (Jupiter)
- 5.971
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 99
- Data arc
- 8.62 years
- First observed
- 18 December 2004
- Last observed
- 2 August 2013
- Residual RMS
- 0.47 ″
- Solution · Otto Matic
- 14 April 2021
Visual & observation
- Absolute magnitude (H)
- 21.4
Discovery & classification
Close approaches 89 on record
Top-down view of the ecliptic, Earth at the centre, for the 2069-12-21 01:52 UTC close approach of 2004 YG1. Catalogue miss distance 176.8 LD · 6.79 × 10⁷ km. The curve is the geocentric path from 2069-12-18 to 2069-12-24, 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 south of the ecliptic. 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 |
|---|---|---|---|---|
| 2069-12-21 01:52:00 | Earth | 0.4542 AU | 176.8 LD | 20.9 km/s |
| 2070-12-23 23:42:00 | Earth | 0.3653 AU | 142.2 LD | 18.5 km/s |
| 2071-12-26 11:56:00 | Earth | 0.277 AU | 107.8 LD | 16.2 km/s |
| 2072-12-27 08:22:00 | Earth | 0.1913 AU | 74.4 LD | 14.2 km/s |
| 2073-12-28 09:57:00 | Earth | 0.1129 AU | 43.9 LD | 12.5 km/s |
| 2074-12-28 08:18:00 | Earth | 0.0633 AU | 24.6 LD | 11.3 km/s |
| 2075-12-26 21:48:00 | Earth | 0.0931 AU | 36.2 LD | 10.6 km/s |
| 2076-12-22 13:05:00 | Earth | 0.16 AU | 62.3 LD | 10.3 km/s |
| 2077-04-29 05:17:00 | Earth | 0.3379 AU | 131.5 LD | 10.2 km/s |
| 2077-12-16 20:58:00 | Earth | 0.2307 AU | 89.8 LD | 10.4 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