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27812 (1993 OJ8)
Classification: Main-belt Asteroid          SPK-ID: 2027812
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649233402026601 2.4476e-08  
a 2.429646369116134 7.1741e-09 au
q 2.028940974410236 5.9553e-08 au
i 1.368059580820772 3.7843e-06 deg
node 229.2820514229516 0.0001687 deg
peri 37.32123000403496 0.00016939 deg
M 54.76353022174676 1.5461e-05 deg
tp 2458790.072757810603
(2019-Nov-02.57275781)
5.9326e-05 TDB
period 1383.289332909016
3.79
6.1267e-06
1.677e-08
d
yr
n .2602492417424566 1.1527e-09 deg/d
Q 2.830351763822033 8.3572e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1949  
   data-arc span      10932 days (29.93 yr)  
   first obs. used      1990-11-19  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:21:06  

Additional Information
 Earth MOID = 1.01323 au 
 Jupiter MOID = 2.25107 au 
 T_jup = 3.489 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456861.5 (2014-Jul-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1644760830858728 2.4576e-08  
q 2.031534800697409 5.9777e-08 au
tp 2457405.753978681602
(2016-Jan-18.25397868)
5.9379e-05 TDB
node 229.4350083067307 0.00016872 deg
peri 37.00096239663437 0.00016941 deg
i 1.367539508451666 3.7811e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1949  
   data-arc span      10932 days (29.93 yr)  
   first obs. used      1990-11-19  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:21:06  

Additional Information
 Jupiter MOID = 2.25107 au 
 T_jup = 3.489 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.039836214083705E-16 -1.461731405897293E-15 -1.749710096453241E-13 -8.332490702057167E-16 -4.224486798181691E-14 6.701156203297314E-17
q -1.461731405897293E-15 3.573236968966915E-15 4.263599488519347E-13 4.121265166803762E-15 9.786999317573949E-14 -2.14818925253301E-16
tp -1.749710096453241E-13 4.263599488519347E-13 3.525850548405507E-9 -1.995986815923507E-15 9.27445749793184E-10 -2.112857951686601E-13
node -8.332490702057167E-16 4.121265166803762E-15 -1.995986815923507E-15 2.846571684571322E-8 -2.845758853824661E-8 -2.983328600583962E-10
peri -4.224486798181691E-14 9.786999317573949E-14 9.27445749793184E-10 -2.845758853824661E-8 2.869994615205695E-8 2.982040818765355E-10
i 6.701156203297314E-17 -2.14818925253301E-16 -2.112857951686601E-13 -2.983328600583962E-10 2.982040818765355E-10 1.429689808274222E-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 14.6   n/a MPO474129  

27812 (1993 OJ8)          Discovered 1993-Jul-20 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

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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
2191-Feb-24 09:50 < 00:01 Amphi 0.0263952403200334 0.0263919933548271 0.0263985056669118 4.91522167611559 4.91522163180532 2521360.909603672 0.877994954847855 1134.72539739866 34.0823687848474 -81.9582708747155 114676.896860036 T 24 CATAB v2.0f-lin.ifort 2020-Nov-13 01:21:11 2020-Nov-13 01:21

Alternate Designations
 1993 OJ8 = 2000 EV38 = 2001 RE144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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