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21272 (1996 SA1)
Classification: Main-belt Asteroid          SPK-ID: 2021272
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09997547949247704 5.5625e-08  
a 2.216830361102472 1.6695e-08 au
q 1.995201682797771 1.2062e-07 au
i 9.157170661014892 7.9843e-06 deg
node 11.65175180179122 3.6763e-05 deg
peri 87.297635648415 6.7138e-05 deg
M 285.6962549534922 4.939e-05 deg
tp 2457849.331478961515
(2017-Apr-05.83147896)
0.00016484 JED
period 1205.583007560066
3.30
1.3619e-05
3.729e-08
d
yr
n .2986107117821695 3.3732e-09 deg/d
Q 2.438459039407172 1.8364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      6450 days (17.66 yr)  
   first obs. used      1996-09-18  
   last obs. used      2014-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55042  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:03:59  

Additional Information
 Earth MOID = 1.03486 au 
 Jupiter MOID = 2.69358 au 
 T_jup = 3.630 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO279735  
rotation period rot_per 2.8006 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

21272 (1996 SA1)          Discovered 1996-Sep-18 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 SA1 = 1998 HN36 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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