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35 Leukothea (A855 HA)
Classification: Main-belt Asteroid          SPK-ID: 2000035
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2253082016423154 3.053e-08  
a 2.994191153927745 6.3902e-09 au
q 2.319575329662956 9.1895e-08 au
i 7.932409837225888 3.6524e-06 deg
node 353.7187614184029 2.4982e-05 deg
peri 213.4265343713588 2.6153e-05 deg
M 291.302421591496 9.0649e-06 deg
tp 2459361.624238412217
(2021-May-27.12423841)
4.8236e-05 TDB
period 1892.420793282359
5.18
6.0582e-06
1.659e-08
d
yr
n .1902325324673634 6.0899e-10 deg/d
Q 3.668806978192534 7.8299e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3563  
   data-arc span      58672 days (160.64 yr)  
   first obs. used      1860-03-11  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:34:08  

Additional Information
 Earth MOID = 1.32064 au 
 Jupiter MOID = 1.34337 au 
 T_jup = 3.202 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.6   n/a MPO502153  
diameter diameter 103.055 km 1.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 31.900 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1990) Icarus 86, 402-447.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2008) Minor Planet Bull. 35, 51-52.]
[Pilcher, F.; Jardine, D. (2009) Minor Planet Bull. 36, 52-54.]
[Pilcher, F. (2010) Minor Planet Bull. 37, 119-122.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.066   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.703   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.82, mean=12.65, max.=21.48) deg.
U-B UB 0.335   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.82, mean=12.65, max.=21.48) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

35 Leukothea (A855 HA)          Discovered 1855-Apr-19 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A855 HA = 1948 DC = 1950 RS1 = 1976 WH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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