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213059 (1999 RG42)
Classification: Main-belt Asteroid          SPK-ID: 2213059
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1874711384266684 5.6667e-08  
a 3.170357235475396 3.2819e-08 au
q 2.576006755321598 1.8763e-07 au
i 5.390610088846238 6.5258e-06 deg
node 83.59859292845486 8.6874e-05 deg
peri 246.0712189559289 8.9435e-05 deg
M 305.9844921113765 2.4486e-05 deg
tp 2459509.868927617252
(2021-Oct-22.36892762)
0.00014269 TDB
period 2061.867383934524
5.65
3.2016e-05
8.766e-08
d
yr
n .1745990080666759 2.7111e-09 deg/d
Q 3.764707715629193 3.8971e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      7559 days (20.70 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:41:10  

Additional Information
 Earth MOID = 1.56901 au 
 Jupiter MOID = 1.61767 au 
 T_jup = 3.168 
[ 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 15.39   n/a E2021B55  
diameter diameter 4.839 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213059 (1999 RG42)          Discovered 1999-Sep-14 by Pravec, P., Kusnirak, P. at Ondrejov
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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