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243634 (1999 SH12)
Classification: Main-belt Asteroid          SPK-ID: 2243634
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2835416216207576 7.268e-08  
a 3.166923694693465 3.6358e-08 au
q 2.268969014750879 2.2705e-07 au
i 25.11480407135948 8.6658e-06 deg
node 283.8158905310823 2.198e-05 deg
peri 106.1010479986567 2.835e-05 deg
M 226.541307393992 1.5539e-05 deg
tp 2459763.631167669209
(2022-Jul-03.13116767)
9.4554e-05 TDB
period 2058.518744612276
5.64
3.5449e-05
9.705e-08
d
yr
n .1748830322493888 3.0116e-09 deg/d
Q 4.064878374636051 4.6667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      332  
   data-arc span      7059 days (19.33 yr)  
   first obs. used      1999-09-27  
   last obs. used      2019-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52457  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:32:55  

Additional Information
 Earth MOID = 1.41067 au 
 Jupiter MOID = 1.88745 au 
 T_jup = 2.998 
[ 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 14.7   n/a MPO396767  
diameter diameter 6.760 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243634 (1999 SH12)          Discovered 1999-Sep-27 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 1999 SH12 = 2005 VY120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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