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18372 (1991 RF16)
Classification: Main-belt Asteroid          SPK-ID: 2018372
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352445943931366 6.97e-08  
a 2.634394793324303 2.7024e-08 AU
q 2.278107138029767 1.904e-07 AU
i 4.066533175586186 6.9596e-06 deg
node 62.93571934306086 0.00010437 deg
peri 290.8425396091699 0.00010758 deg
M 113.7060006055326 2.8368e-05 deg
tp 2456307.211944631965
(2013-Jan-14.71194463)
0.00012116 JED
period 1561.77949261063
4.28
2.4031e-05
6.579e-08
d
yr
n .2305062921515466 3.5468e-09 deg/d
Q 2.990682448618839 3.0679e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      782  
   data-arc span      8222 days (22.51 yr)  
   first obs. used      1991-09-14  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53598  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:12:14  

Additional Information
 Earth MOID = 1.27574 AU 
 T_jup = 3.382 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO244350  

18372 (1991 RF16)          Discovered 1991-Sep-15 by Holt, H. E. at Palomar (675)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RF16 = 1997 AD21 = 1998 DF37 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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