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JPL Small-Body Database Browser
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1197 Rhodesia (1931 LD)
Classification: Main-belt Asteroid          SPK-ID: 2001197
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .232189239884121 3.5355e-08  
a 2.886262937219336 1.1416e-08 au
q 2.216103739720668 1.0125e-07 au
i 12.97660791191142 4.9466e-06 deg
node 255.7020781211936 1.8065e-05 deg
peri 277.1205439957887 2.1026e-05 deg
M 123.775845001513 1.1721e-05 deg
tp 2458384.705699634321
(2018-Sep-23.20569963)
5.6985e-05 TDB
period 1791.027547652247
4.90
1.0626e-05
2.909e-08
d
yr
n .2010019334833252 1.1926e-09 deg/d
Q 3.556422134718004 1.4067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2275  
   data-arc span      34607 days (94.75 yr)  
   first obs. used      1925-01-14  
   last obs. used      2019-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40831  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:02:21  

Additional Information
 Earth MOID = 1.26525 au 
 Jupiter MOID = 1.7311 au 
 T_jup = 3.215 
[ 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 MPO347524  
diameter diameter 47.741 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.060 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Polakis, T. (2018) Minor Planet Bull. 45, 199-203.]
geometric albedo albedo 0.063   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.740   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.38 deg.

1197 Rhodesia (1931 LD)          Discovered 1931-Jun-09 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 LD = 1925 AC = 1970 HL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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