1862 Apollo
From Freepedia
| Discovery A | |
|---|---|
| Discoverer | Karl Reinmuth |
| Discovery date | April 24, 1932 |
| Alternate designations | 1932 HA B |
| Category | Apollo asteroid, Venus-crosser asteroid, Mars-crosser asteroid |
| Orbital elements C | |
| Eccentricity (e) | 0.5598984 |
| Semi-major axis (a) | 220.109 Gm (1.4713430 AU) |
| Perihelion (q) | (0.647 AU) |
| Aphelion (Q) | (2.295 AU) |
| Orbital period (P) | 650.145 d (1.78 a) |
| Mean orbital speed | ? km/s |
| Inclination (i) | 6.35718° |
| Longitude of the ascending node (Ω) | 35.78287° |
| Argument of perihelion (ω) | ?° |
| Mean anomaly (M) | ?° |
| Physical characteristics | |
| Dimensions | 1.7 km |
| Mass | 2×1012 kg |
| Density | ? g/cm³ |
| Surface gravity | ? m/s² |
| Escape velocity | ? km/s |
| Rotation period | 3.065436 h |
| Spectral class | Q |
| Absolute magnitude | 16.23 |
| Albedo | 0.21 [1] |
| Mean surface temperature | ~? K |
1862 Apollo is a Q-type asteroid, discovered by Karl Reinmuth in 1932, but lost and not recovered until 1973.
It is the namesake of the Apollo asteroids, and the first one discovered, although because it was lost for a time its asteroid number (1862) is higher than that of some other Apollo asteroids such as 1566 Icarus. It is also a Venus- and Mars-crosser asteroid.
It was the first asteroid recognized to cross Earth's orbit (although the earlier-discovered 887 Alinda is now known to do so as well).
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