141 Lumen
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| Discovery A | |
|---|---|
| Discoverer | P. P. Henry |
| Discovery date | January 13, 1875 |
| Alternate designations B | none |
| Category | Main belt |
| Orbital elements C | |
| Eccentricity (e) | 0.215 |
| Semi-major axis (a) | 398.786 Gm (2.666 AU) |
| Perihelion (q) | 313.194 Gm (2.094 AU) |
| Aphelion (Q) | 484.378 Gm (3.238 AU) |
| Orbital period (P) | 1589.717 d (4.35 a) |
| Mean orbital speed | 18.03 km/s |
| Inclination (i) | 11.882° |
| Longitude of the ascending node (Ω) | 318.776° |
| Argument of perihelion (ω) | 57.659° |
| Mean anomaly (M) | 152.721° |
| Physical characteristics D | |
| Dimensions | 130 km<ref name="IRAS">Supplemental IRAS Minor Planet Survey</ref> |
| Mass | ~1.6×1018 (estimate) |
| Density | ~1.4 g/cm³ (estimate)<ref name="Krasinsky">See Georgij A. Krasinsky et al Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002), for density estimates</ref> |
| Surface gravity | ~0.025 m/s² (estimate) |
| Escape velocity | ~0.06 km/s (estimate) |
| Rotation period | 0.820 d (19.67 h) <ref>PDS lightcurve data</ref> |
| Spectral class | C-type asteroid |
| Absolute magnitude | 8.20 |
| Albedo (geometric) | 0.054 <ref name="IRAS"/> |
| Mean surface temperature | ~173 K max: 275K (+2° C) |
141 Lumen is a dark (C-type), large rocky asteroid 130 km in diameter orbiting in the Main belt near the Eunomia family of asteroids. It is not, however, physically related to the group, being of the wrong spectral class.
It was discovered on January 13, 1875 by the brothers Paul Henry and Prosper Henry, but Paul is the one who was given the credit for this discovery. It is named after Lumen : Récits de l'infini, a book by the astronomer Camille Flammarion.
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| Minor planets | ||
|---|---|---|
| Previous minor planet | 141 Lumen | Next minor planet |
| Small Solar System bodies |
|---|
| Vulcanoids | Near-Earth asteroids | Main belt | Jupiter Trojans | Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt · Scattered disc · Oort cloud) |
| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
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