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74772 (1999 RT229)
Classification: Main-belt Asteroid          SPK-ID: 2074772
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .22298789115205 2.6751e-08  
a 2.333273557781734 8.3263e-09 au
q 1.812981807651144 6.4602e-08 au
i 4.592463765301388 3.1873e-06 deg
node 95.40994613924725 5.6304e-05 deg
peri 215.4083975954945 5.725e-05 deg
M 309.149164846451 1.0623e-05 deg
tp 2459184.383391481942
(2020-Nov-30.88339148)
3.8442e-05 TDB
period 1301.807939507933
3.56
6.9683e-06
1.908e-08
d
yr
n .2765384885700386 1.4802e-09 deg/d
Q 2.853565307912324 1.0183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      9674 days (26.49 yr)  
   first obs. used      1994-01-19  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:26  

Additional Information
 Earth MOID = .800841 au 
 Jupiter MOID = 2.42245 au 
 T_jup = 3.531 
[ 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 16.0   n/a MPO436306  
diameter diameter 3.549 km 0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74772 (1999 RT229)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RT229 = 2002 GF22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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