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66517 (1999 RM98)
Classification: Main-belt Asteroid          SPK-ID: 2066517
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1498793534340234 2.9131e-08  
a 2.629367384636886 1.095e-08 au
q 2.235279501087 7.9516e-08 au
i 3.456564638347031 4.4797e-06 deg
node 173.6198123047735 5.3582e-05 deg
peri 264.1968300372057 5.6256e-05 deg
M 291.7782409820729 1.9034e-05 deg
tp 2459495.618032173757
(2021-Oct-08.11803217)
8.3306e-05 TDB
period 1557.310938796437
4.26
9.7277e-06
2.663e-08
d
yr
n .2311677077656855 1.444e-09 deg/d
Q 3.023455268186771 1.2591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      8680 days (23.76 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4999  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:22:53  

Additional Information
 Earth MOID = 1.25343 au 
 Jupiter MOID = 2.22796 au 
 T_jup = 3.382 
[ 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 15.09   n/a MPCxxxxx  
diameter diameter 2.742 km 0.910 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.162   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66517 (1999 RM98)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RM98 = 1997 EY28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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