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74712 (1999 RT155)
Classification: Main-belt Asteroid          SPK-ID: 2074712
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1353947656234922 3.5389e-08  
a 2.250799542654992 1.0436e-08 au
q 1.946053066111756 7.9394e-08 au
i 4.275795648609682 4.4747e-06 deg
node 234.267433784276 5.6838e-05 deg
peri 228.0675747829461 6.04e-05 deg
M 306.5729211111636 2.3461e-05 deg
tp 2459183.546986442401
(2020-Nov-30.04698644)
8.1122e-05 TDB
period 1233.399176780248
3.38
8.5781e-06
2.349e-08
d
yr
n .2918763096143531 2.03e-09 deg/d
Q 2.555546019198228 1.1849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      7353 days (20.13 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:20:53  

Additional Information
 Earth MOID = .965924 au 
 Jupiter MOID = 2.58521 au 
 T_jup = 3.611 
[ 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 15.9   n/a MPO395679  

74712 (1999 RT155)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RT155 = 2001 FQ38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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