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101061 (1998 RL4)
Classification: Main-belt Asteroid          SPK-ID: 2101061
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1959748457758786 4.4496e-08  
a 2.298685041078873 1.1433e-08 au
q 1.848200594666121 1.0291e-07 au
i 22.68023522114559 9.5031e-06 deg
node 354.4823546985229 1.1726e-05 deg
peri 264.26131067 3.3459e-05 deg
M 163.3620058760888 3.4704e-05 deg
tp 2458422.848124294100
(2018-Oct-31.34812429)
0.00012177 TDB
period 1272.968424566597
3.49
9.4969e-06
2.6e-08
d
yr
n .2828035582442416 2.1098e-09 deg/d
Q 2.749169487491624 1.3673e-08 au
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      8607 days (23.56 yr)  
   first obs. used      1997-03-13  
   last obs. used      2020-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:40  

Additional Information
 Earth MOID = .982536 au 
 Jupiter MOID = 2.57581 au 
 T_jup = 3.466 
[ 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 15.8   n/a MPO449612  
diameter diameter 4.196 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101061 (1998 RL4)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 RL4 = 1997 ET55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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