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JPL Small-Body Database Browser
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4930 Rephiltim (1983 AO2)
Classification: Main-belt Asteroid          SPK-ID: 2004930
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05126840085317043 4.0758e-08  
a 3.120669327194079 2.0328e-08 au
q 2.9606776011973 1.2842e-07 au
i 15.53494289419765 4.5189e-06 deg
node 122.1031381256708 1.5495e-05 deg
peri 358.9899735804949 4.8325e-05 deg
M 260.3742879975656 4.7966e-05 deg
tp 2459557.735777698628
(2021-Dec-09.23577770)
0.00027038 TDB
period 2013.585408218755
5.51
1.9675e-05
5.387e-08
d
yr
n .1787855625744035 1.7469e-09 deg/d
Q 3.28066105319086 2.137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2135  
   data-arc span      25544 days (69.94 yr)  
   first obs. used      1950-02-08  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:25:34  

Additional Information
 Earth MOID = 1.97652 au 
 Jupiter MOID = 1.79737 au 
 T_jup = 3.158 
[ 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 11.2   n/a MPO347563  
diameter diameter 35.676 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.243 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Megna, R. (2011) http://www.macastronomy.com/MacAstronomy.com/Asteroids.html]
[Owings, L.E. (2012) Minor Planet Bull. 39, 22-23.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.054   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4930 Rephiltim (1983 AO2)          Discovered 1983-Jan-10 by Salyards, S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1983 AO2 = 1950 CD = 1965 WU = 1990 HE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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