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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07183287934664717 3.36e-08  
a 2.32682490860175 8.1786e-09 au
q 2.159682375681387 7.857e-08 au
i 6.642568561516436 3.8369e-06 deg
node 154.1263360590591 2.9995e-05 deg
peri 356.4218055607354 3.931e-05 deg
M 132.8536129487658 2.5052e-05 deg
tp 2458522.073913275415
9.0082e-05 TDB
period 1296.414808735922
n .277688898317214 1.4641e-09 deg/d
Q 2.493967441522112 8.7661e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      9722 days (26.62 yr)  
   first obs. used      1992-09-24  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49121  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:48:23  

Additional Information
 Earth MOID = 1.17036 au 
 Jupiter MOID = 2.48908 au 
 T_jup = 3.561 
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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 MPO474029  
diameter diameter 2.682 km 0.506 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 2.58 h n/a LCDB (Rev. 2019-August); 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] (  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2031-Aug-30 19:23 < 00:01 Amphi 0.0488261788150239 0.0488229404833611 0.0488294171474606 4.34601734104458 4.34601731395334 2463109.307805973 0.420237709574106 161.721592493854 30.2166238716991 3.58076162771169 47517.0350540771 T 24 CATAB v2.0e-lin.ifort 2019-May-30 02:48:35 2019-May-30 02:48

Alternate Designations
 1992 SA4 = 1998 HD105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Mar-29 19:33 UT
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