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27760 (1991 RB7)
Classification: Main-belt Asteroid          SPK-ID: 2027760
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1885980806577902 7.61e-08  
a 2.23851224820866 1.093e-08 au
q 1.816333134667552 1.6745e-07 au
i 4.467704364582817 6.6753e-06 deg
node 4.797873397695529 6.6447e-05 deg
peri 4.907425095779508 6.8305e-05 deg
M 148.4952300657306 1.7966e-05 deg
tp 2457095.899539911440
(2015-Mar-14.39953991)
5.9109e-05 JED
period 1223.313136398202
3.35
8.9599e-06
2.453e-08
d
yr
n .2942827876924032 2.1554e-09 deg/d
Q 2.660691361749768 1.2992e-08 au
  Orbit Determination Parameters
   # obs. used (total)      936  
   data-arc span      15241 days (41.73 yr)  
   first obs. used      1974-06-18  
   last obs. used      2016-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53216  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:56:44  

Additional Information
 Earth MOID = .814576 au 
 Jupiter MOID = 2.79536 au 
 T_jup = 3.609 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO365581  

27760 (1991 RB7)          Discovered 1991-Sep-02 by McNaught, R. H. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RB7 = 1998 YW22 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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