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16550 (1991 RB13)
Classification: Main-belt Asteroid          SPK-ID: 2016550
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2326757333480132 7.9439e-08  
a 2.784465567811321 2.0118e-08 au
q 2.13658799983853 2.2987e-07 au
i 7.675658965788186 8.2928e-06 deg
node 343.9160201868087 3.6044e-05 deg
peri 16.10089716653553 3.8573e-05 deg
M 84.20771496852809 1.3915e-05 deg
tp 2457003.527349927883
(2014-Dec-12.02734993)
6.3605e-05 JED
period 1697.11473680735
4.65
1.8393e-05
5.036e-08
d
yr
n .2121247268627458 2.299e-09 deg/d
Q 3.432343135784113 2.4799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      13979 days (38.27 yr)  
   first obs. used      1977-09-09  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5522  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:34:13  

Additional Information
 Earth MOID = 1.13232 au 
 Jupiter MOID = 2.0201 au 
 T_jup = 3.279 
[ 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 MPO309283  

16550 (1991 RB13)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RB13 = 1977 RQ2 = 1998 BG37 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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