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101161 (1998 RJ78)
Classification: Main-belt Asteroid          SPK-ID: 2101161
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1655418581423141 4.8142e-08  
a 2.352385212681564 1.0039e-08 au
q 1.962966993507755 1.1214e-07 au
i 3.592071360850246 5.1101e-06 deg
node 87.33082597528956 9.321e-05 deg
peri 324.6495337369205 9.4723e-05 deg
M 24.76445472548274 1.6722e-05 deg
tp 2459109.845919522350
(2020-Sep-17.34591952)
6.1079e-05 TDB
period 1317.835152589566
3.61
8.4364e-06
2.31e-08
d
yr
n .2731752900145322 1.7488e-09 deg/d
Q 2.741803431855372 1.1701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      506  
   data-arc span      10695 days (29.28 yr)  
   first obs. used      1991-11-29  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52187  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:29  

Additional Information
 Earth MOID = .974502 au 
 Jupiter MOID = 2.6122 au 
 T_jup = 3.536 
[ 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 16.4   n/a MPO436472  
diameter diameter 3.225 km 0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101161 (1998 RJ78)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 RJ78 = 2002 XX52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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