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136977 (1998 RM61)
Classification: Main-belt Asteroid          SPK-ID: 2136977
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1991454864494497 3.6495e-08  
a 2.475273155377524 1.3216e-08 au
q 1.982333678754602 9.4491e-08 au
i 6.718347999265156 4.4731e-06 deg
node 196.6856329029429 3.8425e-05 deg
peri 111.5800518729662 4.1216e-05 deg
M 242.6117732706526 1.8627e-05 deg
tp 2459464.326081760353
(2021-Sep-06.82608176)
7.5991e-05 TDB
period 1422.437275747538
3.89
1.1392e-05
3.119e-08
d
yr
n .2530867308794393 2.0268e-09 deg/d
Q 2.968212632000445 1.5847e-08 au
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      7881 days (21.58 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:48:22  

Additional Information
 Earth MOID = .979963 au 
 Jupiter MOID = 2.33734 au 
 T_jup = 3.445 
[ 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 16.1   n/a MPO417725  

136977 (1998 RM61)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 RM61 = 2002 SW36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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