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382239 (2012 SR12)
Classification: Main-belt Asteroid          SPK-ID: 2382239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04758320880066163 6.4497e-08  
a 2.724287127275179 3.2399e-08 au
q 2.594656804065089 1.7993e-07 au
i 5.24128165788294 7.399e-06 deg
node 20.52326503903062 6.2443e-05 deg
peri 192.6009305296006 8.8131e-05 deg
M 51.33902872837586 6.1075e-05 deg
tp 2458766.280585162038
(2019-Oct-09.78058516)
0.00027871 TDB
period 1642.395491893321
4.50
2.9299e-05
8.022e-08
d
yr
n .2191920288243114 3.9102e-09 deg/d
Q 2.853917450485268 3.3941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      230  
   data-arc span      8946 days (24.49 yr)  
   first obs. used      1994-10-06  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50888  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:35:29  

Additional Information
 Earth MOID = 1.58862 au 
 Jupiter MOID = 2.10776 au 
 T_jup = 3.349 
[ 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 16.2   n/a MPO471926  
diameter diameter 2.098 km 0.354 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

382239 (2012 SR12)          Discovered 2006-Mar-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-12-19

[ show close-approach data ]
Alternate Designations
 2012 SR12 = 1994 TY7 = 2006 FE33 = 2008 WA142 = 2008 WC56 = 2010 DD76 = 2010 KH35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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