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32 Pomona
Classification: Main-belt Asteroid          SPK-ID: 2000032
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 91 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08028921214627495 3.7144e-08  
a 2.58797577736266 7.3001e-09 au
q 2.380189241144568 9.5744e-08 au
i 5.523465186369497 4.3582e-06 deg
node 220.4481502653577 4.6113e-05 deg
peri 339.0735343854039 5.2244e-05 deg
M 108.2885745733498 2.4538e-05 deg
tp 2456943.076077353347
(2014-Oct-12.57607735)
0.0001033 JED
period 1520.683163497118
4.16
6.4342e-06
1.762e-08
d
yr
n .2367357044791022 1.0017e-09 deg/d
Q 2.795762313580751 7.8862e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1478  
   data-arc span      55469 days (151.87 yr)  
   first obs. used      1864-01-07  
   last obs. used      2015-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67305  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 15:26:15  

Additional Information
 Earth MOID = 1.3777 au 
 Jupiter MOID = 2.17135 au 
 T_jup = 3.410 
[ 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 7.56 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 25
diameter diameter 80.76 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 25
rotation period rot_per 9.448 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Schober, H.J. (1976) Astron. Astrophys. 53, 115-119.]
[Chang, Y.C.; Zhou, X.-h.; Yang, X.-y.; Zhang, Y.-y.; et al. (1981) Acta Astron. Sin. 22, 169-173; Chin. Astron. Astrophys. 5, 434-437.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Erikson, A.; Magnusson, P. (1993) Icarus 103, 62-66.]
[Dotto, E.; De Angelis, G.; Di Martino, M.; Barucci, M.A.; et al. (1995) Icarus 117, 313-327.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
geometric albedo albedo 0.2564   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 25
B-V BV .857 mag .017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=3.45, mean=13.75, max.=24.02) deg.
U-B UB .429 mag .025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=3.45, mean=13.75, max.=24.02) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   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)

32 Pomona          Discovered 1854-Oct-26 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1945 RB = 1949 SH = 1950 YD = A899 QA = A911 KF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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