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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306132589392008 1.8107e-08  
a 2.774946752691203 8.8849e-09 au
q 2.412501913939453 4.8916e-08 au
i 7.006877238946903 8.3503e-07 deg
node 232.4388460337583 8.9521e-06 deg
peri 157.4091717592518 1.2168e-05 deg
M 193.2946390523431 1.3217e-05 deg
tp 2459982.357260282697
(2023-Feb-06.85726028)
6.4167e-05 TDB
period 1688.41968909535
4.62
8.109e-06
2.22e-08
d
yr
n .2132171297960206 1.024e-09 deg/d
Q 3.137391591442954 1.0045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3135  
   data-arc span      46434 days (127.13 yr)  
   first obs. used      1894-02-02  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:18:56  

Additional Information
 Earth MOID = 1.41882 au 
 Jupiter MOID = 2.29713 au 
 T_jup = 3.312 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456533.5 (2013-Aug-29.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1273334660631573 1.8212e-08  
q 2.422932922002718 4.9014e-08 au
tp 2456603.987034478244
(2013-Nov-07.48703448)
5.7329e-05 TDB
node 232.6527717436654 8.9503e-06 deg
peri 157.4362575360555 1.2353e-05 deg
i 7.002581450216931 8.3454e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3135  
   data-arc span      46434 days (127.13 yr)  
   first obs. used      1894-02-02  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:18:56  

Additional Information
 Jupiter MOID = 2.29713 au 
 T_jup = 3.312 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.316792562901305E-16 -8.821227763532401E-16 7.056941122973136E-13 -2.073623581559848E-14 1.367632548192245E-13 -9.989976387056819E-16
q -8.821227763532401E-16 2.402419753623579E-15 -1.776011330356247E-12 5.776329881615804E-14 -3.44185103637317E-13 2.50110418753665E-15
tp 7.056941122973136E-13 -1.776011330356247E-12 3.286662312387562E-9 7.391712899322824E-11 5.093109758898227E-10 -3.752470278694585E-12
node -2.073623581559848E-14 5.776329881615804E-14 7.391712899322824E-11 8.010795737047022E-11 -6.396439228137375E-11 -5.362892553702471E-13
peri 1.367632548192245E-13 -3.44185103637317E-13 5.093109758898227E-10 -6.396439228137375E-11 1.526049202271522E-10 -7.623571360595584E-14
i -9.989976387056819E-16 2.50110418753665E-15 -3.752470278694585E-12 -5.362892553702471E-13 -7.623571360595584E-14 6.964558235923478E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.88   n/a E2021B10  
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. 2020-October); 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

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 ]
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