Wikipedia
162 Laurentia
162 Laurentia is a large and dark main-belt asteroid that was discovered by the French brothers Paul Henry and Prosper Henry on 21 April 1876, and named after Joseph Jean Pierre Laurent, an amateur astronomer who discovered asteroid 51 Nemausa.
A three-dimensional model of 162 Laurentia based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Paul Henry and Prosper Henry |
| Discovery site | Paris |
| Discovery date | 21 April 1876 |
| Designations | |
| (162) Laurentia | |
| Pronunciation | /lɒˈrɛnʃiə/[1] |
Named after | Joseph Jean Pierre Laurent |
| A876 HB | |
| main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.88 yr (41596 d) |
| Aphelion | 3.5574 AU (532.18 Gm) |
| Perihelion | 2.4779 AU (370.69 Gm) |
| 3.0177 AU (451.44 Gm) | |
| Eccentricity | 0.17887 |
| 5.24 yr (1914.7 d) | |
| 300.020° | |
| 0° 11m 16.872s / day | |
| Inclination | 6.0977° |
| 35.539° | |
| 116.277° | |
| Earth MOID | 1.49465 AU (223.596 Gm) |
| Jupiter MOID | 1.47116 AU (220.082 Gm) |
| TJupiter | 3.214 |
| Physical characteristics | |
| Dimensions | 97.021±0.493 km[2] |
| Mass | (1.452 ± 0.658/0.289)×1018 kg[3] |
Mean density | 3.037 ± 1.376/0.604 g/cm3[3] |
| 11.8686 h (0.49453 d)[2][4] | |
| 0.051±0.006[2] | |
| C | |
| 9.16[2] | |
An occultation by Laurentia was observed from Clive, Alberta on 21 November 1999.[citation needed]
Photometric observations of this asteroid from multiple observatories during 2007 gave a light curve with a period of 11.8686 ± 0.0004 hours and a brightness variation of 0.40 ± 0.05 in magnitude. This is in agreement with previous studies in 1994 and 2007.[4]
References edit
- ^ Noah Webster (1884) A Practical Dictionary of the English Language
"Laurentian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.) - ^ a b c d e Yeomans, Donald K., "162 Laurentia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- ^ a b Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society. 492 (1). doi:10.1093/mnras/stz3407.
- ^ a b Oey, Julian; Krajewski, Ric (June 2008), "Lightcurve Analysis of Asteroids from Kingsgrove and Other Collaborating Observatories in the First Half of 2007", The Minor Planet Bulletin, vol. 35, no. 2, pp. 47–48, Bibcode:2008MPBu...35...47O.
External links edit
- 162 Laurentia at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
- 162 Laurentia at the JPL Small-Body Database