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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 93 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124606572822391 1.6349e-08  
a 3.141539176461763 6.8902e-09 au
q 2.788239615798969 5.0922e-08 au
i 3.831559930958632 2.1767e-06 deg
node 283.2021654395769 2.8649e-05 deg
peri 312.3152098163238 3.0327e-05 deg
M 152.1848508619395 1.1108e-05 deg
tp 2457740.732411531638
(2016-Dec-18.23241153)
6.1495e-05 TDB
period 2033.818281488479
5.57
6.691e-06
1.832e-08
d
yr
n .1770069643274761 5.8233e-10 deg/d
Q 3.494838737124557 7.6651e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3442  
   data-arc span      62282 days (170.52 yr)  
   first obs. used      1849-05-26  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53526  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:30:00  

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

[ 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 1.73180781524768 1.73180742148072 1.73180820901465 2.51406619681199 2.31134901180339 2430475.396101019 0.667753022790748 30.0406404666103 9.98645021543035 79.1484100039534 4339248.54792619 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
1952-Sep-10 20:30 < 00:01 Jupiter 1.55129632108636 1.55129613774561 1.55129650442711 1.69044075996324 1.32874789914116 2434266.354185224 0.554700102152553 33.7979276861698 26.2939917414975 -79.9867072759015 5013293.0629971 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
1963-Jan-10 16:12 < 00:01 Jupiter 1.79261639453864 1.79261613224018 1.79261665683711 2.74411274824091 2.56615319144032 2438040.175282427 0.416092103811032 33.4076600781906 5.58744528084673 -83.0187192769255 5817733.02564211 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
2036-Nov-02 19:29 < 00:01 Jupiter 1.63438849940189 1.634388288515 1.63438871028869 2.19119310177091 1.9403160520995 2465000.311520313 0.424093631569366 29.334602957304 8.83830394082857 -86.8182802457121 5029514.54648058 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
2047-Mar-14 04:17 < 00:01 Jupiter 1.59690060390743 1.59690034325706 1.5969008645578 1.80555740339277 1.48297148605105 2468783.678566874 0.586059537021282 31.8484541982904 16.0350889395441 85.476854307489 4998278.81559225 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
2057-Jul-18 06:28 < 00:01 Jupiter 1.92399361735668 1.9239932059259 1.92399402878746 3.40607019904913 3.27426793257443 2472562.769640688 0.677394347975557 35.1410026262643 11.4149532867295 -71.8871206170955 4693897.65483346 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
2120-Dec-11 11:11 00:01 Jupiter 1.88166386484516 1.88166310536784 1.88166462432236 2.93923628914546 2.78187328418041 2495718.966237301 1.331487572953 28.9507773137699 23.048753997813 -6.35994243217481 2468990.45904534 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
2131-May-10 06:37 00:02 Jupiter 1.5677376771656 1.56773740350554 1.5677379508261 1.9563200507787 1.65729342686681 2499520.775831166 1.50510680120492 72.783954696538 14.5633080997228 -80.0328903211854 4674424.79896766 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36
2141-Sep-14 06:46 00:02 Jupiter 1.67596297768789 1.6759622951498 1.67596366022683 2.12812880643771 1.87567139005449 2503300.782096027 1.7106497392909 83.4418404227427 6.75260331460068 87.9206931293739 4909863.33395909 T 93 CATAB v2.0f-lin.ifort 2019-Dec-13 20:36:03 2019-Dec-13 20:36

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