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JPL Small-Body Database Browser
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378 Holmia (A893 XA)
Classification: Main-belt Asteroid          SPK-ID: 2000378
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304391020709904 4.0643e-08  
a 2.775401756420562 9.941e-09 au
q 2.413380843426814 1.1187e-07 au
i 7.006244626015016 4.481e-06 deg
node 232.4421120082103 3.4957e-05 deg
peri 157.4466398287821 3.8537e-05 deg
M 150.6070994228134 1.7025e-05 deg
tp 2458293.970729555170
(2018-Jun-24.47072956)
7.8955e-05 TDB
period 1688.834977467275
4.62
9.0737e-06
2.484e-08
d
yr
n .2131646992176154 1.1453e-09 deg/d
Q 3.13742266941431 1.1238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2685  
   data-arc span      46021 days (126.00 yr)  
   first obs. used      1894-02-02  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44458  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:47  

Additional Information
 Earth MOID = 1.42086 au 
 Jupiter MOID = 2.29588 au 
 T_jup = 3.312 
[ 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 9.8   n/a MPO435698  
diameter diameter 27.831 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.450 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Dotto, E.; Rotundi, A.; De Sanctis, M.C. (1992) in Physical Properties of Small Solar System Bodies. A. Brahic, J.-C. Gerard, J. Surdej, eds. Universite de Liege, Institut d'Astrophysique, Liege, p. 211.]
[Di Martino, M.; Dotto, E.; Barucci, M.A.; Fulchignoni, M.; Rotundi, A. (1994) Icarus 109, 210-218.]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.339   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.874   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.82 deg.
U-B UB 0.424   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.82 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B S   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)

378 Holmia (A893 XA)          Discovered 1893-Dec-06 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A893 XA = 1953 XS1 = 1960 FJ = 1962 TP = 1962 UC = 1979 KP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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