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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1889405346686449 1.0175e-07  
a 2.237713234000081 1.2536e-08 AU
q 1.814918499133004 2.2867e-07 AU
i 4.467747768051593 1.0258e-05 deg
node 4.798414825202332 6.8794e-05 deg
peri 4.747289373353451 7.0996e-05 deg
M 331.9999116666003 2.0262e-05 deg
tp 2457095.595939419442
(2015-Mar-14.09593942)
6.9319e-05 JED
period 1222.658221051489
3.35
1.0274e-05
2.813e-08
d
yr
n .2944404198995196 2.4742e-09 deg/d
Q 2.660507968867159 1.4904e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      668  
   data-arc span      14237 days (38.98 yr)  
   first obs. used      1974-06-18  
   last obs. used      2013-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54013  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 01:52:12  

Additional Information
 Earth MOID = .81432 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 15.0 mag n/a MPO263584  

27760 (1991 RB7)          Discovered 1991-Sep-02 by McNaught, R. H. at Siding Spring (413)
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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