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79639 (1998 RP78)
Classification: Main-belt Asteroid          SPK-ID: 2079639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1183147656887932 3.0295e-08  
a 2.319785720289923 6.9147e-09 au
q 2.045320816345613 7.1126e-08 au
i 7.394775592847606 4.8493e-06 deg
node 150.4046858874712 1.9113e-05 deg
peri 241.8374025025661 2.7609e-05 deg
M 138.5862027924646 1.947e-05 deg
tp 2458899.692975683788
(2020-Feb-20.19297568)
6.9604e-05 TDB
period 1290.536324324206
3.53
5.7702e-06
1.58e-08
d
yr
n .2789537909275939 1.2472e-09 deg/d
Q 2.594250624234234 7.7328e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2094  
   data-arc span      8872 days (24.29 yr)  
   first obs. used      1997-02-14  
   last obs. used      2021-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4843  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:46:26  

Additional Information
 Earth MOID = 1.06119 au 
 Jupiter MOID = 2.82783 au 
 T_jup = 3.558 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.66   n/a MPCxxxxx  
diameter diameter 3.276 km 0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.026 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.286   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79639 (1998 RP78)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1998 RP78 = 2000 CS80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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