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102134 (1999 RD181)
Classification: Main-belt Asteroid          SPK-ID: 2102134
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 .1931554102326331 3.9543e-08  
a 2.37305479415545 1.3224e-08 au
q 1.914686421885837 9.6396e-08 au
i 2.006459393204245 4.8178e-06 deg
node 55.14497468006313 0.00013329 deg
peri 253.6198139302928 0.00013409 deg
M 323.268005246676 1.8356e-05 deg
tp 2459336.739201354386
(2021-May-02.23920135)
6.8718e-05 TDB
period 1335.242281747867
3.66
1.1161e-05
3.056e-08
d
yr
n .269613990600081 2.2536e-09 deg/d
Q 2.831423166425063 1.5778e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      7557 days (20.69 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:29  

Additional Information
 Earth MOID = .899235 au 
 Jupiter MOID = 2.42715 au 
 T_jup = 3.517 
[ 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 16.43   n/a E2021B55  
diameter diameter 1.376 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.282   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102134 (1999 RD181)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RD181 = 1999 RL83 = 2002 JH42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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