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27731 (1990 RK3)
Classification: Main-belt Asteroid          SPK-ID: 2027731
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172874063114823 6.5787e-08  
a 2.377201235394575 9.4389e-09 au
q 1.860665344675236 1.5794e-07 au
i 1.20655087924803 4.8368e-06 deg
node 249.5712727261178 0.0003202 deg
peri 126.919824028675 0.0003205 deg
M 313.6712726114525 1.4376e-05 deg
tp 2457572.784107606949
(2016-Jul-03.28410761)
5.4083e-05 JED
period 1338.74341546955
3.67
7.9734e-06
2.183e-08
d
yr
n .2689088856311825 1.6016e-09 deg/d
Q 2.893737126113913 1.149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      627  
   data-arc span      13055 days (35.74 yr)  
   first obs. used      1979-09-23  
   last obs. used      2015-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56354  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:41:19  

Additional Information
 Earth MOID = .860747 au 
 Jupiter MOID = 2.56815 au 
 T_jup = 3.508 
[ 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 15.6 mag n/a MPO257058  

27731 (1990 RK3)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RK3 = 1979 SA6 = 2000 HH1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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