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66581 (1999 RF155)
Classification: Main-belt Asteroid          SPK-ID: 2066581
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06758782206006236 2.7837e-08  
a 2.513555978305558 1.0696e-08 au
q 2.343670204105836 6.9987e-08 au
i 4.08761084408172 3.1945e-06 deg
node 234.9839560475552 5.8121e-05 deg
peri 199.3397210236853 6.7687e-05 deg
M 39.79893291905545 3.421e-05 deg
tp 2459039.583641288368
(2020-Jul-09.08364129)
0.00013861 TDB
period 1455.563877906162
3.99
9.291e-06
2.544e-08
d
yr
n .2473268301476829 1.5787e-09 deg/d
Q 2.68344175250528 1.1419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1008  
   data-arc span      7864 days (21.53 yr)  
   first obs. used      1999-09-07  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:09  

Additional Information
 Earth MOID = 1.35835 au 
 Jupiter MOID = 2.48876 au 
 T_jup = 3.453 
[ 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 15.64   n/a MPCxxxxx  

66581 (1999 RF155)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RF155 = 2002 JR57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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