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JPL Small-Body Database Browser
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154842 (2004 RA42)
Classification: Main-belt Asteroid          SPK-ID: 2154842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06646791254683548 4.9741e-08  
a 3.152733741176852 4.1674e-08 au
q 2.943178110584852 1.6532e-07 au
i 2.307549438995397 7.9153e-06 deg
node 200.3516865455491 0.00013315 deg
peri 271.1444347080862 0.00014776 deg
M 204.367514444154 6.6736e-05 deg
tp 2459884.448822469092
(2022-Oct-31.94882247)
0.00038609 TDB
period 2044.698926142157
5.60
4.0541e-05
1.11e-07
d
yr
n .1760650408709468 3.4909e-09 deg/d
Q 3.362289371768852 4.4444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      7643 days (20.93 yr)  
   first obs. used      1998-09-16  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:45  

Additional Information
 Earth MOID = 1.96098 au 
 Jupiter MOID = 1.71533 au 
 T_jup = 3.203 
[ 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 15.8   n/a MPO436783  

154842 (2004 RA42)          Discovered 2004-Sep-07 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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