281 Lucretia

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281 Lucretia
281Lucretia (Lightcurve Inversion).png
A three-dimensional model of 281 Lucretia based on its light curve.
Discovery
Discovered by Johann Palisa
Discovery date 31 October 1888
Designations
Named after
Caroline Lucretia Herschel
A906 FD; 1948 EK;
1984 JX
Main belt (Flora family)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 126.00 yr (46020 d)
Aphelion 2.47750 AU (370.629 Gm)
Perihelion 1.89821 AU (283.968 Gm)
2.18786 AU (327.299 Gm)
Eccentricity 0.13239
3.24 yr (1182.0 d)
20.14 km/s
161.880°
0° 18m 16.423s / day
Inclination 5.30407°
31.4134°
16.7540°
Earth MOID 0.906973 AU (135.6812 Gm)
Jupiter MOID 2.88103 AU (430.996 Gm)
Jupiter Tisserand parameter 3.658
Physical characteristics
Dimensions 11.76±0.9 km[1]
12 km [2]
Mass ~2×1015 (estimate)
Mean density
~2.7 g/cm³ (estimate)[3]
Equatorial surface gravity
~0.004 m/s² (estimate)
Equatorial escape velocity
~0.007 km/s (estimate)
0.181 d (4.348 h)[4]
0.1987±0.035[1]
0.199 [2]
Temperature ~183 K
max: 277 K (+4°C)
S[5]
12.02

281 Lucretia is an asteroid belonging to the Flora family in the Main Belt.[4]

It was discovered by Johann Palisa on October 31, 1888 in Vienna. It is named for the middle name of Caroline Herschel, one of the first female astronomers.

References[edit]

  1. ^ a b c "281 Lucretia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016. 
  2. ^ a b Supplemental IRAS Minor Planet Survey Archived June 23, 2006, at the Wayback Machine.
  3. ^ G. A. Krasinsky; et al. (2002). "Hidden Mass in the Asteroid Belt". Icarus. 158: 98. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837. 
  4. ^ a b Kryszczynska, A.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy & Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. A72. 
  5. ^ "Asteroid Taxonomy". Planetary Science Institute. Retrieved 2016-02-27. 

External links[edit]