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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2330250189632009 9.5912e-08  
a 2.785152449332352 3.197e-08 AU
q 2.136142247011275 2.7008e-07 AU
i 7.675218665496673 9.4848e-06 deg
node 343.9172107228662 4.5211e-05 deg
peri 16.08609884458698 4.7384e-05 deg
M 316.9483162570532 1.9836e-05 deg
tp 2457003.529677717939
(2014-Dec-12.02967772)
9.6171e-05 JED
period 1697.742750663791
4.65
2.9232e-05
8.003e-08
d
yr
n .2120462595756899 3.6511e-09 deg/d
Q 3.434162651653428 3.942e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      708  
   data-arc span      13424 days (36.75 yr)  
   first obs. used      1977-09-09  
   last obs. used      2014-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54357  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:36:46  

Additional Information
 Earth MOID = 1.13238 AU 
 T_jup = 3.278 
[ 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 13.9 mag n/a MPO263495  

16550 (1991 RB13)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar (675)
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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