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JPL Small-Body Database Browser
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154830 (2004 RT12)
Classification: Main-belt Asteroid          SPK-ID: 2154830
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3062860633437656 1.2325e-07  
a 2.749403278715831 2.1823e-08 au
q 1.907299371933517 3.2799e-07 au
i 14.92134082129371 7.3637e-06 deg
node 355.8075588488468 2.7864e-05 deg
peri 356.5486440999431 3.2444e-05 deg
M 148.6309454316595 1.1534e-05 deg
tp 2458313.015619116244
(2018-Jul-13.51561912)
5.1706e-05 TDB
period 1665.160484577217
4.56
1.9825e-05
5.428e-08
d
yr
n .2161953777634855 2.574e-09 deg/d
Q 3.591507185498145 2.8507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      396  
   data-arc span      8895 days (24.35 yr)  
   first obs. used      1995-08-29  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 20:05:57  

Additional Information
 Earth MOID = .90249 au 
 Jupiter MOID = 1.85083 au 
 T_jup = 3.230 
[ 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 MPO217461  
diameter diameter 4.308 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154830 (2004 RT12)          Discovered 2004-Sep-03 by LONEOS at Anderson Mesa
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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