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792 Metcalfia (A907 FC)
Classification: Main-belt Asteroid          SPK-ID: 2000792
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314682933511742 3.8423e-08  
a 2.621999290281991 7.7568e-09 au
q 2.277289518420627 1.0084e-07 au
i 8.625163624850696 3.3479e-06 deg
node 265.0704390901621 2.757e-05 deg
peri 227.5506117248193 3.0383e-05 deg
M 280.1005378679512 1.3852e-05 deg
tp 2459344.682382502820
(2021-May-10.18238250)
6.0165e-05 TDB
period 1550.769609640651
4.25
6.8816e-06
1.884e-08
d
yr
n .232142800427602 1.0301e-09 deg/d
Q 2.966709062143354 8.7766e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2896  
   data-arc span      38623 days (105.74 yr)  
   first obs. used      1915-02-04  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:11  

Additional Information
 Earth MOID = 1.30224 au 
 Jupiter MOID = 2.14911 au 
 T_jup = 3.376 
[ 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 10.2   n/a MPO502160 IRAS observations used: 15
diameter diameter 61.804 km 0.380 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.17 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Carlsson, M.; Lagerkvist, C.-I. (1981) Astron. Astrophys. Suppl. Ser. 44, 15-22.]
[Sarneczky, K.; Szabo, G.; Kiss, L.L. (1999) Astron. Astrophys. Suppl. Ser. 137, 363-368.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.024   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.708   0.003 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=11.76, mean=12.31, max.=12.86) deg.
U-B UB 0.213   0.009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=11.76, mean=12.31, max.=12.86) deg.
SMASSII spectral type spec_B X   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)

792 Metcalfia (A907 FC)          Discovered 1907-Mar-20 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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