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187787 (1998 SR168)
Classification: Main-belt Asteroid          SPK-ID: 2187787
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .285204803963309 3.3179e-08  
a 3.082683558908359 1.9801e-08 au
q 2.203487398808985 9.4856e-08 au
i 7.08610077712915 3.9291e-06 deg
node 116.0867052981897 2.6448e-05 deg
peri 224.6612514737793 2.7825e-05 deg
M 47.78179273136291 7.1867e-06 deg
tp 2458938.107277629097
(2020-Mar-29.60727763)
3.8357e-05 TDB
period 1976.932522908933
5.41
1.9048e-05
5.215e-08
d
yr
n .1821002972171668 1.7545e-09 deg/d
Q 3.961879719007734 2.5449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      586  
   data-arc span      8675 days (23.75 yr)  
   first obs. used      1997-05-09  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51202  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:50  

Additional Information
 Earth MOID = 1.1996 au 
 Jupiter MOID = 1.47279 au 
 T_jup = 3.152 
[ 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 15.59   n/a MPCxxxxx  
diameter diameter 5.021 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187787 (1998 SR168)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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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
1909-May-01 09:59 00:03 Jupiter 1.51795912342695 1.51795750124886 1.51796074561699 1.02516121736565 n/a 2418427.915818532 3.23293770662258 238.837308899982 26.5256737336782 71.2188403409543 8108147.05379855 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
1919-Jan-19 12:42 00:03 Jupiter 1.82538152883149 1.82537934132874 1.82538371633496 2.14851983919371 1.92043944627547 2421978.029013089 3.13787365372971 161.592106876087 20.4807557241862 -82.7589710394391 1230199.79083367 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
1969-Mar-02 09:01 00:02 Jupiter 1.64821806172067 1.64821682782118 1.64821929562018 0.813924873271881 n/a 2440282.875569887 1.61962776911714 68.5326914496866 59.468408716267 -62.378340945368 4033469.11531588 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
1978-Nov-26 07:25 00:01 Jupiter 1.65796601965657 1.65796517791837 1.6579668613958 1.66701447209852 1.32558524725627 2443838.808709318 1.22950857658675 137.905134751631 87.2157451768726 76.7498129183339 1627493.55960946 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
2029-Jan-13 00:28 < 00:01 Jupiter 1.81382611011347 1.81382550356347 1.81382671686998 0.98016298633121 0.163576529043357 2462149.519267945 0.55346483552889 37921.4649712962 1373.43541097416 6.94171603712017 5124479.02073767 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
2038-Sep-25 05:08 < 00:01 Jupiter 1.53284399080259 1.53284327365401 1.53284470795883 1.37488458534593 0.886082927085431 2465691.714192484 0.833437885143729 396.621171381764 164.831672280776 35.0790397082548 2160583.62613154 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
2088-Nov-11 14:38 00:03 Jupiter 1.97108138838814 1.97107970045573 1.97108307631427 1.62464387899802 1.33417321907401 2484002.109877710 2.54577576393244 216.25454541683 82.9884748433485 14.0422237401343 567700.006570644 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
2098-Jul-03 15:19 00:03 Jupiter 1.47377716768427 1.47377639522405 1.47377794017539 1.15738267653961 0.435977768620786 2487523.137910017 2.63269484166199 3741.3055696096 274.875592367982 11.966727653448 3098274.87245146 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56
2158-Apr-01 09:37 00:05 Jupiter 1.47216352222264 1.47216313418189 1.47216391028975 0.932627718830515 n/a 2509343.900417388 4.72555293269632 531.993775020916 15.703569631102 88.7816195738588 14016627.1280496 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:51 2021-Apr-13 21:56

Alternate Designations
 1998 SR168 = 2006 BW233 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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