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10 Hygiea
Classification: Main-belt Asteroid          SPK-ID: 2000010
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1140558191698366 1.6633e-08  
a 3.14391529716374 6.9455e-09 au
q 2.78533346254515 5.2446e-08 au
i 3.832190197134019 2.2319e-06 deg
node 283.3358264459519 2.9579e-05 deg
peri 311.8217676947241 3.1269e-05 deg
M 300.1210728568821 1.1412e-05 deg
tp 2457739.169582049565
(2016-Dec-16.66958205)
6.5136e-05 JED
period 2036.126152468252
5.57
6.7473e-06
1.847e-08
d
yr
n .176806333715422 5.859e-10 deg/d
Q 3.502497131782331 7.7377e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2840  
   data-arc span      59732 days (163.54 yr)  
   first obs. used      1849-05-26  
   last obs. used      2012-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61205  
   data source      ORB  
   producer      Davide Farnocchia  
   solution date      2013-Jul-16 08:46:36  

Additional Information
 Earth MOID = 1.7748 au 
 Jupiter MOID = 1.52443 au 
 T_jup = 3.196 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.43 mag 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. 2015-December); 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 Bul. 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 Bul. 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.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.0717   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
B-V BV .696 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=4.77, mean=10.97, max.=18.25) deg.
U-B UB .351 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 00:02 Jupiter 1.73180771296322 1.73180628107858 1.73180914484814 2.51406590515957 2.31134868207357 2430475.395918844 2.46950090588735 3.1915636764126 1.11793111921207 -31.4829385767832 5834832.41659 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
1952-Sep-10 20:30 00:04 Jupiter 1.55129635527692 1.55129620991342 1.55129650064077 1.69044075239343 1.32874789856748 2434266.354029962 4.37401786061661 1.48100648674017 1.17572662886144 -47.6423954369914 5061493.04065035 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
1963-Jan-10 16:12 00:02 Jupiter 1.79261646103218 1.79261645917576 1.79261646288962 2.74411313236444 2.56615360903227 2438040.175174137 1.78337144687273 2.95947869087421 0.786260747356528 -7.38664402635482 4565898.09746565 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
2036-Nov-02 19:29 00:02 Jupiter 1.63438863111967 1.63438859445676 1.63438866778317 2.19119373753961 1.9403167915968 2465000.311795357 1.96966423917238 2.31356027028789 0.953042380794162 -26.6794271459265 5425534.98846981 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
2047-Mar-14 04:18 00:05 Jupiter 1.59690047534809 1.59690040795726 1.5969005427401 1.8055570273175 1.48297099937479 2468783.678918376 4.91064641870215 1.67614085106311 1.00942510805225 26.3438759118666 4964481.15911368 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
2057-Jul-18 06:29 00:02 Jupiter 1.92399327695028 1.92399137460323 1.92399517929744 3.40606854308438 3.27426618616176 2472562.770058221 2.36313519966891 5.36210439183928 1.00180512678449 -13.4316139185014 4790311.88105676 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
2120-Dec-11 11:13 00:04 Jupiter 1.8816647517079 1.88166231379207 1.88166718962479 2.93923911679806 2.78187634805116 2495718.967349174 4.36687174550188 6.65425312042454 1.23040762731148 -31.8271182046663 6161109.96362292 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
2131-May-10 06:39 00:08 Jupiter 1.56773795512293 1.56773555211345 1.56774035813594 1.95632160880853 1.65729532381258 2499520.777115394 8.21166624049295 5.051189111614 1.12611671034431 -49.5857688970479 5246356.71192242 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56
2141-Sep-14 06:48 00:11 Jupiter 1.67596220959215 1.67595857439055 1.67596584479421 2.12812548912601 1.87566750275756 2503300.783548864 11.1787020928117 5.91197877886862 0.736566309459151 13.0440964821604 3035351.24510096 T 85 CATAB v2.0c-linF95 2015-Dec-18 11:56:20 2015-Dec-18 11:56

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