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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157459348256398 1.6575e-08  
a 3.137759909062181 6.6997e-09 AU
q 2.774576955129365 5.2218e-08 AU
i 3.841913233247883 2.2357e-06 deg
node 283.4166768848367 2.9482e-05 deg
peri 312.6399357133005 3.1142e-05 deg
M 193.0625142642495 1.1181e-05 deg
tp 2457741.911196042544
(2016-Dec-19.41119604)
6.4467e-05 JED
period 2030.149364485946
5.56
6.5021e-06
1.78e-08
d
yr
n .1773268540224653 5.6794e-10 deg/d
Q 3.500942862994997 7.4752e-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 = 1.76479 AU 
 T_jup = 3.197 
[ 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 27.623 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 1.73180771293266 1.73180628104802 1.73180914481758 2.51406590532482 2.31134868224958 2430475.395918844 2.46950090483525 3.19156367491465 1.11793111968044 -31.4829385976656 5834832.41803482 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
1952-Sep-10 20:30 00:04 Jupiter 1.55129635526868 1.55129620990518 1.55129650063252 1.69044075237281 1.32874789853906 2434266.354029962 4.37401785919914 1.48100648700992 1.17572662952033 -47.6423955431664 5061493.0404647 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
1963-Jan-10 16:12 00:02 Jupiter 1.79261646102671 1.79261645917109 1.79261646288365 2.74411313053094 2.56615360707106 2438040.175174315 1.7833714495331 2.95947869619393 0.786260745512142 -7.38664393572276 4565898.07986634 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2036-Nov-02 19:29 00:02 Jupiter 1.6343886315619 1.63438859489874 1.63438866822566 2.19119369828157 1.94031674733508 2465000.311788650 1.96966446163169 2.3135603887746 0.953042293706854 -26.679423260501 5425534.70682341 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2047-Mar-14 04:18 00:05 Jupiter 1.59690047473686 1.59690040734436 1.59690054212714 1.80555700193072 1.4829709683288 2468783.678927895 4.91064618574885 1.6761411676937 1.00942532353342 26.3438941549941 4964480.91909935 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2057-Jul-18 06:29 00:02 Jupiter 1.92399327565917 1.9239913733121 1.92399517800633 3.40606853537365 3.27426617805041 2472562.770060033 2.36313520666017 5.36210441561747 1.00180512405917 -13.4316138388004 4790311.84981935 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2120-Dec-11 11:13 00:04 Jupiter 1.8816647551088 1.88166231719268 1.88166719302598 2.93923912097597 2.78187635275787 2495718.967352745 4.36687182563115 6.65425383432048 1.23040759680417 -31.827116743206 6161109.84254887 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2131-May-10 06:39 00:08 Jupiter 1.56773795623466 1.56773555322481 1.56774035924804 1.95632161355009 1.65729532964084 2499520.777120529 8.21166626816129 5.05118950649963 1.12611659827385 -49.5857639544223 5246356.86016253 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2133-Sep-11 08:06 < 00:01 Iris 0.0494758367465302 0.0494730885323166 0.0494785850425479 3.98434133402239 3.98434130485999 2500375.837481166 0.690616595750558 170.255018464446 17.442284593405 -36.6540991948331 255569.617271443 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29
2141-Sep-14 06:48 00:11 Jupiter 1.67596220573742 1.67595857053625 1.67596584093905 2.1281254875945 1.87566750040019 2503300.783553395 11.1787022538048 5.91197804634654 0.736566293187305 13.0440952956024 3035351.16475746 T 85 CATAB v2.0c-linF95 2013-Aug-05 11:29:43 2013-Aug-05 11:29

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