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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2537088545261978 3.5108e-08  
a 2.722624229777315 1.7212e-08 au
q 2.031870355135241 9.6513e-08 au
i 10.23021264484129 4.6527e-06 deg
node 128.927721694373 2.3874e-05 deg
peri 110.7135083877357 2.6055e-05 deg
M 287.967976380949 1.3235e-05 deg
tp 2459328.824354866419
(2021-Apr-24.32435487)
6.2629e-05 TDB
period 1640.891950738565
4.49
1.5561e-05
4.26e-08
d
yr
n .219392873393013 2.0805e-09 deg/d
Q 3.413378104419389 2.1579e-08 au
  Orbit Determination Parameters
   # obs. used (total)      804  
   data-arc span      8005 days (21.92 yr)  
   first obs. used      1998-03-04  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5404  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:58:19  

Additional Information
 Earth MOID = 1.04598 au 
 Jupiter MOID = 1.72805 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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