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101103 (1998 RA42)
Classification: Main-belt Asteroid          SPK-ID: 2101103
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3134687149480407 3.3439e-08  
a 3.052607894924187 1.5447e-08 au
q 2.095710820862059 1.033e-07 au
i 3.827793015929123 3.811e-06 deg
node 227.4077377297197 8.4248e-05 deg
peri 161.6218505000398 8.5171e-05 deg
M 43.7077169361855 9.4071e-06 deg
tp 2458963.983968946384
(2020-Apr-24.48396895)
5.0584e-05 TDB
period 1948.071808546231
5.33
1.4786e-05
4.048e-08
d
yr
n .1847981159732781 1.4026e-09 deg/d
Q 4.009504968986316 2.0289e-08 au
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      9922 days (27.16 yr)  
   first obs. used      1993-12-15  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:13  

Additional Information
 Earth MOID = 1.10022 au 
 Jupiter MOID = 1.45213 au 
 T_jup = 3.156 
[ 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 MPO449612  
diameter diameter 4.480 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101103 (1998 RA42)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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