(3878) Jyoumon Main-belt Asteroid
Discovered on 14 November 1982 by Kosai, H., Hurukawa, K. at Kiso.
Where Jyoumon is today
Seen from above the solar system on 2026-10-14: Jyoumon is 2.85 au from the Sun and 2.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3878 |
| Provisional designation | 1982 VR4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.6 km (#3,506 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0720 |
| Absolute magnitude (H) | 13.24 |
| Orbital period | 5.49 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.57 – 3.65 au |
| Eccentricity | 0.174 |
| Inclination | 2.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.56 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 14 November 1982
- (3291) Dunlap
- (3320) Namba
- (4855) Tenpyou
- (4890) Shikanosima
- (7634) Shizutani-Kou
- (8144) Hiragagennai
- (11827) Wasyuzan
- (12221) Ogatakoan
- (12682) Kawada
- (14338) Shibakoukan
- (14820) Aizuyaichi
- (14821) Motaeno
More named asteroids discovered by Kosai, H., Hurukawa, K.
- (2271) Kiso
- (2330) Ontake
- (2470) Agematsu
- (2924) Mitake-mura
- (2960) Ohtaki
- (3111) Misuzu
- (3249) Musashino
- (3291) Dunlap
- (3319) Kibi
- (3320) Namba
- (3391) Sinon
- (3607) Naniwa
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