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74701 (1999 RT145)
Classification: Main-belt Asteroid          SPK-ID: 2074701
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2313329310784545 4.5604e-08  
a 2.31721778132741 1.1209e-08 au
q 1.781169000025827 1.0363e-07 au
i 3.282768452048489 4.6762e-06 deg
node 281.8184030385406 9.8691e-05 deg
peri 112.1019959624461 9.9528e-05 deg
M 283.2821168274468 1.5528e-05 deg
tp 2459275.063508526615
(2021-Mar-01.56350853)
5.6985e-05 TDB
period 1288.394035159506
3.53
9.3484e-06
2.559e-08
d
yr
n .2794176239378749 2.0274e-09 deg/d
Q 2.853266562628993 1.3802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      14824 days (40.59 yr)  
   first obs. used      1978-11-28  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57741  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:20:53  

Additional Information
 Earth MOID = .790859 au 
 Jupiter MOID = 2.59394 au 
 T_jup = 3.542 
[ 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 16.0   n/a MPO436305  

74701 (1999 RT145)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RT145 = 1978 WC21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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