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20035 (1992 SA4)
Classification: Main-belt Asteroid          SPK-ID: 2020035
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07239513520554576 3.161e-08  
a 2.325833941353966 7.5272e-09 au
q 2.157454878703998 7.2901e-08 au
i 6.64636060099906 3.4737e-06 deg
node 154.1120099435764 2.6378e-05 deg
peri 356.5827084804797 3.4203e-05 deg
M 188.2205756803843 2.242e-05 deg
tp 2459818.708717751299
(2022-Aug-27.20871775)
8.1481e-05 TDB
period 1295.586705287694
3.55
6.2894e-06
1.722e-08
d
yr
n .2778663894363284 1.3489e-09 deg/d
Q 2.494213004003934 8.0721e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2012  
   data-arc span      10331 days (28.28 yr)  
   first obs. used      1992-09-24  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46836  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:11:49  

Additional Information
 Earth MOID = 1.16792 au 
 Jupiter MOID = 2.48785 au 
 T_jup = 3.562 
[ 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 14.68   n/a E2021B10  
diameter diameter 2.682 km 0.506 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.58 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.427   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20035 (1992 SA4)          Discovered 1992-Sep-24 by Spacewatch at Kitt Peak
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 SA4 = 1998 HD105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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