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JPL Small-Body Database Browser
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59974 (1999 RM254)
Classification: Main-belt Asteroid          SPK-ID: 2059974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2538168069603957 3.7318e-08  
a 2.723055168852753 1.7628e-08 au
q 2.031898000717546 1.0154e-07 au
i 10.2284848996665 4.7616e-06 deg
node 128.9333691372385 2.6576e-05 deg
peri 110.6523721154749 2.8612e-05 deg
M 200.308943774011 1.2643e-05 deg
tp 2459328.549955736237
(2021-Apr-24.04995574)
6.2606e-05 TDB
period 1641.281548630586
4.49
1.5937e-05
4.363e-08
d
yr
n .2193407951855477 2.1299e-09 deg/d
Q 3.414212336987959 2.2102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      700  
   data-arc span      7612 days (20.84 yr)  
   first obs. used      1998-03-04  
   last obs. used      2019-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57009  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:41:13  

Additional Information
 Earth MOID = 1.0459 au 
 Jupiter MOID = 1.72717 au 
 T_jup = 3.288 
[ 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 14.8   n/a MPO426341  

59974 (1999 RM254)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RM254 = 2002 AE31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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