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8162 (1990 SK11)
Classification: Main-belt Asteroid          SPK-ID: 2008162
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1094257707622977 3.6156e-08  
a 2.258979477733514 6.9035e-09 au
q 2.011788907246312 8.2144e-08 au
i 2.41833622703023 3.2416e-06 deg
node 270.9623975539261 9.7391e-05 deg
peri 107.4564542841039 9.8703e-05 deg
M 253.9996231394261 1.6472e-05 deg
tp 2459365.650385628712
(2021-May-31.15038563)
5.7189e-05 TDB
period 1240.128976137911
3.40
5.6848e-06
1.556e-08
d
yr
n .2902923864589754 1.3307e-09 deg/d
Q 2.506170048220716 7.659e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2163  
   data-arc span      11822 days (32.37 yr)  
   first obs. used      1987-12-14  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:54:32  

Additional Information
 Earth MOID = 1.01522 au 
 Jupiter MOID = 2.93261 au 
 T_jup = 3.612 
[ 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 14.4   n/a MPO473878  
diameter diameter 4.411 km 0.347 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.224 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.208   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8162 (1990 SK11)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
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
1980-Feb-27 21:05 < 00:01 Hebe 0.0401483398711139 0.0401448932878612 0.0401517864571247 6.36944231352913 6.36944228921893 2444297.378241166 0.255685288433372 172.640159024815 22.0688712864953 -5.61189200822339 43656.2691973128 T 29 CATAB v2.0f-lin.ifort 2020-May-20 02:54:41 2020-May-20 02:54

Alternate Designations
 1990 SK11 = 1987 XR = 1990 QA19 = 1990 SL29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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