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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1094257705468604 3.6213e-08  
a 2.25897947769307 6.9078e-09 au
q 2.011788907696961 8.226e-08 au
i 2.418336320505332 3.2422e-06 deg
node 270.962398711853 9.752e-05 deg
peri 107.4564534941226 9.8833e-05 deg
M 253.9996228179945 1.6475e-05 deg
tp 2459365.650386726174
(2021-May-31.15038673)
5.7199e-05 TDB
period 1240.128976104607
3.40
5.6883e-06
1.557e-08
d
yr
n .2902923864667714 1.3315e-09 deg/d
Q 2.506170047689178 7.6637e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2159  
   data-arc span      11484 days (31.44 yr)  
   first obs. used      1987-12-14  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48729  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:47:28  

Additional Information
 Earth MOID = 1.01522 au 
 Jupiter MOID = 2.93261 au 
 T_jup = 3.612 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456574.5 (2013-Oct-09.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1089354741060197 3.6076e-08  
q 2.012783835552975 8.182e-08 au
tp 2456885.587845269590
(2014-Aug-16.08784527)
5.5764e-05 TDB
node 271.0829333982427 9.7449e-05 deg
peri 107.2513292029273 9.8787e-05 deg
i 2.419185704565947 3.2438e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2159  
   data-arc span      11484 days (31.44 yr)  
   first obs. used      1987-12-14  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48729  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:47:28  

Additional Information
 Jupiter MOID = 2.93261 au 
 T_jup = 3.612 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.301458153501046E-15 -2.943157449496507E-15 -4.786976055846829E-13 3.041613931122912E-15 -1.669291395253706E-13 1.18990563344332E-16
q -2.943157449496507E-15 6.694543744929439E-15 1.104892639084874E-12 -6.516588278161894E-15 3.800399651550332E-13 -2.261168074751183E-16
tp -4.786976055846829E-13 1.104892639084874E-12 3.109570614031657E-9 -5.878824870378056E-12 9.210434470309022E-10 1.712570323719554E-13
node 3.041613931122912E-15 -6.516588278161894E-15 -5.878824870378056E-12 9.49634318026037E-9 -9.489110526474932E-9 3.893119836005738E-11
peri -1.669291395253706E-13 3.800399651550332E-13 9.210434470309022E-10 -9.489110526474932E-9 9.758870037861028E-9 -3.885821228515013E-11
i 1.18990563344332E-16 -2.261168074751183E-16 1.712570323719554E-13 3.893119836005738E-11 -3.885821228515013E-11 1.052222601445422E-11

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

[ show close-approach data ]
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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