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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1121173205996011 1.6348e-08  
a 3.142435385124691 6.9602e-09 au
q 2.790113949587135 5.0952e-08 au
i 3.831785911531398 2.1752e-06 deg
node 283.1984407227602 2.8609e-05 deg
peri 312.4129341102546 3.0296e-05 deg
M 222.8505434245186 1.1246e-05 deg
tp 2459775.656783501827
(2022-Jul-15.15678350)
6.4829e-05 TDB
period 2034.688645718962
5.57
6.7599e-06
1.851e-08
d
yr
n .1769312473225077 5.8783e-10 deg/d
Q 3.494756820662247 7.7405e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3481  
   data-arc span      62342 days (170.68 yr)  
   first obs. used      1849-05-26  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:13:46  

Additional Information
 Earth MOID = 1.7803 au 
 Jupiter MOID = 1.53545 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 5.5   n/a MPO492748 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-August); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1942-Apr-25 21:30 < 00:01 Jupiter 1.7318078579443 1.73180746478944 1.73180825109917 2.51406628209341 2.31134910978146 2430475.396106773 0.665488530190703 29.9826904152236 9.98067103988419 79.179902510159 4343311.75719804 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
1952-Sep-10 20:30 < 00:01 Jupiter 1.55129633680935 1.55129615355467 1.55129652006395 1.6904407672952 1.32874791263375 2434266.354184769 0.552866584379207 33.7647941502579 26.2843199832823 -80.1198805966406 5014827.84429251 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
1963-Jan-10 16:12 < 00:01 Jupiter 1.79261637060962 1.792616108383 1.79261663283625 2.74411266001316 2.56615309463619 2438040.175291087 0.414769827526243 33.3506765628678 5.58396645533574 -83.0000740089303 5817960.713634 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
2036-Nov-02 19:29 < 00:01 Jupiter 1.63438852190758 1.63438831160357 1.63438873221149 2.191193237856 1.94031620945792 2465000.311518055 0.422304108475107 29.2635540958531 8.83558402010443 -86.7858128720375 5036210.23628009 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
2047-Mar-14 04:17 < 00:01 Jupiter 1.59690061578374 1.59690035594142 1.59690087562605 1.8055574158897 1.48297150392643 2468783.678543814 0.583642123238123 31.7954217419835 16.0165456382474 85.5386761664576 5005331.69457316 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
2057-Jul-18 06:28 < 00:01 Jupiter 1.92399360913163 1.92399319967207 1.92399401859118 3.40607031381162 3.27426805138178 2472562.769607227 0.674707094660008 35.0575855024119 11.3790953042956 -71.9694707117496 4709713.36512765 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
2120-Dec-11 11:11 00:01 Jupiter 1.88166385784798 1.88166310180099 1.88166461389486 2.939236401587 2.78187340238074 2495718.966201817 1.32641433093352 28.8241609974081 23.0468155698042 -6.47457714067368 2480129.13082551 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
2131-May-10 06:37 00:02 Jupiter 1.56773769206505 1.56773741922281 1.56773796490775 1.95632005044092 1.65729342956636 2499520.775786296 1.49942478232569 72.5199707576725 14.5615102592204 -80.0327089815709 4677645.27913061 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15
2141-Sep-14 06:46 00:02 Jupiter 1.67596299740547 1.67596231776083 1.67596367705096 2.12812883586007 1.87567142660701 2503300.782051105 1.70425311095587 83.1349032724026 6.74582325217252 87.9300878592318 4913885.44917783 T 95 CATAB v2.0f-lin.ifort 2020-Feb-22 15:14:57 2020-Feb-22 15:15

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