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10 Hygiea
Classification: Main-belt Asteroid          SPK-ID: 2000010
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 92 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124606576702566 1.6349e-08  
a 3.14153917911499 6.9177e-09 au
q 2.78823961693484 5.0923e-08 au
i 3.831560034123068 2.1793e-06 deg
node 283.2021668627339 2.8683e-05 deg
peri 312.3152062465516 3.0363e-05 deg
M 152.1848512078909 1.1108e-05 deg
tp 2457740.732408487996
(2016-Dec-18.23240849)
6.15e-05 TDB
period 2033.81828406501
5.57
6.7177e-06
1.839e-08
d
yr
n .1770069641032358 5.8466e-10 deg/d
Q 3.49483874129514 7.6957e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3409  
   data-arc span      62175 days (170.23 yr)  
   first obs. used      1849-05-26  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53379  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:03:59  

Additional Information
 Earth MOID = 1.77839 au 
 Jupiter MOID = 1.53558 au 
 T_jup = 3.197 
[ 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 5.43   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
diameter diameter 407.12 km 6.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
GM GM 7. km^3/s^2 n/a Scholl et al., A&A, v.179, p.311, 1987  
rotation period rot_per 27.630 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Michalowski, T.; Velichko, F.P.; Lindgren, M.; Oja, T.; et al. (1991) Astron. Astrophys. Suppl. Ser. 91, 53-59.]
[Lagerkvist, C.-I.; Oja, T.; Pohjolainen, S.; Erikson, A. (1992) Minor Planet Bull. 19, 29-30.]
[Erikson, A.; Magnusson, P. (1993) Icarus 103, 62-66.]
[Michalowski, T. (1993) Icarus 106, 563-572.]
[Michalowski, T.; Mohamed, R.A.; Velichko, F.P. (1995) Minor Planet Bull. 22, 35-36.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (2000) Astron. Astrophys. Suppl. Ser. 145, 255-261.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Shevchenko, V.G.; Belksaya, I.N.; Muinon, K.; Penttila, A.; et al. (2016) Plan. Space Sci. 123, 101-116.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.0717   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
B-V BV 0.696   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=11; phase (min.=4.77, mean=10.97, max.=18.25) deg.
U-B UB 0.351   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=11; phase (min.=4.77, mean=10.97, max.=18.25) 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)

10 Hygiea          Discovered 1849-Apr-12 by De Gasparis, A. at Naples
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A900 GA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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