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186979 (2004 RT257)
Classification: Main-belt Asteroid          SPK-ID: 2186979
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714688995394967 5.7084e-08  
a 3.183923376921287 3.3066e-08 au
q 2.637979539262516 1.9255e-07 au
i 7.209002072574971 5.6221e-06 deg
node 192.6362602584445 3.5525e-05 deg
peri 188.5135539621488 3.7998e-05 deg
M 302.81139507057 1.799e-05 deg
tp 2459530.147161077480
(2021-Nov-11.64716108)
0.00010752 TDB
period 2075.115805575846
5.68
3.2326e-05
8.85e-08
d
yr
n .1734842937597401 2.7026e-09 deg/d
Q 3.729867214580058 3.8736e-08 au
  Orbit Determination Parameters
   # obs. used (total)      471  
   data-arc span      8874 days (24.30 yr)  
   first obs. used      1996-03-16  
   last obs. used      2020-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:30  

Additional Information
 Earth MOID = 1.63962 au 
 Jupiter MOID = 1.72985 au 
 T_jup = 3.163 
[ 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 15.22   n/a MPCxxxxx  
diameter diameter 7.002 km 1.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.033   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

186979 (2004 RT257)          Discovered 2004-Sep-09 by LONEOS at Anderson Mesa
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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