(3540) Protesilaos Jupiter Trojan
Discovered on 27 October 1973 by F. Borngen at Tautenburg.
Where Protesilaos is today
Seen from above the solar system on 2026-10-14: Protesilaos is 4.92 au from the Sun and 5.92 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3540 |
| Provisional designation | 1973 UF5 |
| Orbit class | Jupiter Trojan |
| Diameter | 70.2 km (#466 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0620 |
| Rotation period | 8.95 hours |
| Absolute magnitude (H) | 9.37 |
| Orbital period | 12.1 years |
| Semi-major axis | 5.28 au |
| Perihelion – aphelion | 4.66 – 5.91 au |
| Eccentricity | 0.118 |
| Inclination | 23.3° |
| Closest distance between its orbit and Earth's (MOID) | 3.74 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 27 October 1973
- (2424) Tautenburg
- (3245) Jensch
- (3826) Handel
- (3941) Haydn
- (4850) Palestrina
- (5157) Hindemith
- (12182) Storm
- (12659) Schlegel
- (18286) Kneipp
- (19914) Klagenfurt
- (39464) Poppelmann
More named asteroids discovered by F. Borngen
- (3181) Ahnert
- (3245) Jensch
- (3338) Richter
- (3539) Weimar
- (3802) Dornburg
- (3808) Tempel
- (3826) Handel
- (3917) Franz Schubert
- (3941) Haydn
- (3943) Silbermann
- (3954) Mendelssohn
- (3955) Bruckner
← (3539) Weimar · (3541) Graham →