Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1094257697012081 3.4953e-08  
a 2.258979477611173 6.8141e-09 au
q 2.011788909534338 7.9695e-08 au
i 2.418336103239017 3.2367e-06 deg
node 270.9623890779263 9.4632e-05 deg
peri 107.4564630663338 9.5955e-05 deg
M 253.9996229568993 1.6422e-05 deg
tp 2459365.650386227817
(2021-May-31.15038623)
5.7037e-05 TDB
period 1240.128976037168
3.40
5.6112e-06
1.536e-08
d
yr
n .2902923864825577 1.3135e-09 deg/d
Q 2.506170045688009 7.5597e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2249  
   data-arc span      11986 days (32.82 yr)  
   first obs. used      1987-12-14  
   last obs. used      2020-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:22:52  

Additional Information
 Earth MOID = 1.01522 au 
 Jupiter MOID = 2.93261 au 
 T_jup = 3.612 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456629.5 (2013-Dec-03.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .108910445155099 3.4822e-08  
q 2.012776895557663 7.9273e-08 au
tp 2456885.634457804727
(2014-Aug-16.13445780)
5.5418e-05 TDB
node 271.0830511428425 9.4563e-05 deg
peri 107.2657452163875 9.5912e-05 deg
i 2.419217047311732 3.2382e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2249  
   data-arc span      11986 days (32.82 yr)  
   first obs. used      1987-12-14  
   last obs. used      2020-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:22:52  

Additional Information
 Jupiter MOID = 2.93261 au 
 T_jup = 3.612 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.212597526126133E-15 -2.752225261856621E-15 -4.19896709422578E-13 2.138943934651229E-15 -1.426864757341668E-13 9.739207135743656E-17
q -2.752225261856621E-15 6.28421546816958E-15 9.788091259701345E-13 -4.610261159893052E-15 3.280671116303256E-13 -1.794007359150964E-16
tp -4.19896709422578E-13 9.788091259701345E-13 3.071100310435429E-9 -5.064603371970007E-12 9.048997882739161E-10 1.967589436242243E-13
node 2.138943934651229E-15 -4.610261159893052E-15 -5.064603371970007E-12 8.94217130841686E-9 -8.935155252386771E-9 3.556708009616183E-11
peri -1.426864757341668E-13 3.280671116303256E-13 9.048997882739161E-10 -8.935155252386771E-9 9.199028496910476E-9 -3.548826732580066E-11
i 9.739207135743656E-17 -1.794007359150964E-16 1.967589436242243E-13 3.556708009616183E-11 -3.548826732580066E-11 1.048595986354403E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-26 03:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin