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74685 (1999 RT123)
Classification: Main-belt Asteroid          SPK-ID: 2074685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02348235840963554 4.559e-08  
a 2.314007900529546 8.1957e-09 au
q 2.259669537646583 1.0502e-07 au
i 4.360075727856584 3.9533e-06 deg
node 314.9568908796728 5.3043e-05 deg
peri 228.0242232012936 9.0085e-05 deg
M 126.8479356585566 7.2483e-05 deg
tp 2458547.470392476152
(2019-Mar-04.97039248)
0.00025907 TDB
period 1285.717878354641
3.52
6.8306e-06
1.87e-08
d
yr
n .2799992176049534 1.4875e-09 deg/d
Q 2.368346263412509 8.3881e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1125  
   data-arc span      9692 days (26.54 yr)  
   first obs. used      1994-01-18  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51255  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:13:38  

Additional Information
 Earth MOID = 1.26408 au 
 Jupiter MOID = 2.60312 au 
 T_jup = 3.578 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO432299  

74685 (1999 RT123)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RT123 = 2000 YU63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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