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118399 (1999 RM61)
Classification: Main-belt Asteroid          SPK-ID: 2118399
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08868941889320645 8.9475e-08  
a 3.132941479192757 2.9234e-08 au
q 2.855082719976729 2.8023e-07 au
i 21.67527360021544 8.7723e-06 deg
node 338.0351353120793 1.4315e-05 deg
peri 22.57643852261912 3.4587e-05 deg
M 278.8333361751901 3.1597e-05 deg
tp 2459657.169540803739
(2022-Mar-18.66954080)
0.00018039 TDB
period 2025.474830950171
5.55
2.835e-05
7.762e-08
d
yr
n .1777361014311495 2.4877e-09 deg/d
Q 3.410800238408785 3.1827e-08 au
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      10296 days (28.19 yr)  
   first obs. used      1991-02-13  
   last obs. used      2019-04-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63734  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:06  

Additional Information
 Earth MOID = 1.85567 au 
 Jupiter MOID = 2.02594 au 
 T_jup = 3.097 
[ 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 14.5   n/a MPO280574  
diameter diameter 6.880 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118399 (1999 RM61)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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