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27761 (1991 RL13)
Classification: Main-belt Asteroid          SPK-ID: 2027761
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757830012551348 3.4676e-08  
a 2.212682382980948 6.803e-09 au
q 1.823730432876193 7.9312e-08 au
i 2.393654032557896 2.8906e-06 deg
node 293.8212534873608 9.147e-05 deg
peri 32.03563092936928 9.1896e-05 deg
M 280.9093897715986 1.0395e-05 deg
tp 2459264.618893766934
(2021-Feb-19.11889377)
3.521e-05 TDB
period 1202.20088682477
3.29
5.5443e-06
1.518e-08
d
yr
n .2994507855927683 1.381e-09 deg/d
Q 2.601634333085702 7.9989e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      10505 days (28.76 yr)  
   first obs. used      1991-09-13  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52304  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:35:40  

Additional Information
 Earth MOID = .812357 au 
 Jupiter MOID = 2.71853 au 
 T_jup = 3.634 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO259532  
diameter diameter 2.431 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27761 (1991 RL13)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RL13 = 1998 XT34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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