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32 Pomona

Classification: Main-belt Asteroid SPK-ID: 2000032

[ 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 106 (heliocentric ecliptic J2000)

Element	Value	Uncertainty (1-sigma)	Units
e	.0816344344410892	4.4284e-08
a	2.587221171609826	8.1637e-09	au
q	2.376014834491446	1.1541e-07	au
i	5.521633340250563	4.8503e-06	deg
node	220.3867204962824	4.9944e-05	deg
peri	339.0706086052863	5.821e-05	deg
M	127.0513088214024	3.1038e-05	deg
t_p	2458464.054750041797 (2018-Dec-11.55475004)	0.00013053	TDB
period	1520.018107459442 4.16	7.1944e-06 1.97e-08	d yr
n	.236839283843601	1.121e-09	deg/d
Q	2.798427508728206	8.8301e-09	au

Orbit Determination Parameters

# obs. used (total)	2201
data-arc span	56904 days (155.79 yr)
first obs. used	1864-01-07
last obs. used	2019-10-25
planetary ephem.	DE431
SB-pert. ephem.	SB431-N16
condition code	0
norm. resid. RMS	.56598
source	ORB
producer	Otto Matic
solution date	2020-Feb-22 15:15:17

Additional Information

Earth MOID = 1.37386 au

Jupiter MOID = 2.16813 au

T_jup = 3.410

[ 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	7.6		n/a	MPO492748	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. 2019-August); 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.] [Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo	albedo	0.2564		0.010	IRAS-A-FPA-3-RDR-IMPS-V6.0	IRAS observations used: 25
B-V	BV	0.857		0.017	EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2	#obs=9; phase (min.=3.45, mean=13.75, max.=24.02) deg.
U-B	UB	0.429		0.025	EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2	#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.DB	Last 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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