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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1653917057580434 5.3204e-08  
a 2.351967115644807 1.211e-08 au
q 1.962971262501487 1.2662e-07 au
i 3.592166855673049 5.1299e-06 deg
node 87.32996890696444 0.00010878 deg
peri 324.641653013193 0.00011045 deg
M 330.1272170075395 2.1488e-05 deg
tp 2459109.824746265144
(2020-Sep-17.32474627)
7.9056e-05 TDB
period 1317.483833541219
3.61
1.0175e-05
2.786e-08
d
yr
n .2732481346904793 2.1103e-09 deg/d
Q 2.740962968788127 1.4113e-08 au
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      10529 days (28.83 yr)  
   first obs. used      1991-11-29  
   last obs. used      2020-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56182  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:04  

Additional Information
 Earth MOID = .975315 au 
 Jupiter MOID = 2.61236 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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