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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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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649233334806433 2.7915e-08  
a 2.429646370895408 7.993e-09 au
q 2.02894099222819 6.9358e-08 au
i 1.368059185320414 3.8213e-06 deg
node 229.2820166386702 0.00017972 deg
peri 37.321262540579 0.0001804 deg
M 54.76353115835521 1.5563e-05 deg
tp 2458790.072753980564
(2019-Nov-02.57275398)
5.9775e-05 TDB
period 1383.289334428528
3.79
6.8261e-06
1.869e-08
d
yr
n .2602492414565788 1.2843e-09 deg/d
Q 2.830351749562626 9.3113e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1763  
   data-arc span      10899 days (29.84 yr)  
   first obs. used      1990-11-19  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 17:15:05  

Additional Information
 Earth MOID = 1.01323 au 
 Jupiter MOID = 2.25107 au 
 T_jup = 3.489 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456564.5 (2013-Sep-29.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654601011914499 2.8051e-08  
q 2.027547960878648 6.9617e-08 au
tp 2456020.975214462765
(2012-Apr-03.47521446)
6.0468e-05 TDB
node 229.5060639066998 0.00017944 deg
peri 36.78712244279038 0.00018011 deg
i 1.369238913320634 3.8215e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1763  
   data-arc span      10899 days (29.84 yr)  
   first obs. used      1990-11-19  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 17:15:05  

Additional Information
 Jupiter MOID = 2.25107 au 
 T_jup = 3.489 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.868790816442836E-16 -1.944371614327488E-15 -8.640933605419489E-15 -6.616238307718867E-16 1.511307448209749E-14 2.394389566983347E-17
q -1.944371614327488E-15 4.846458365561889E-15 -5.169765488425704E-14 1.44628897954019E-15 -5.163790949084404E-14 -3.98752584571227E-17
tp -8.640933605419489E-15 -5.169765488425704E-14 3.65640318870934E-9 1.087265555754654E-11 9.581429366536669E-10 1.961786034890485E-14
node -6.616238307718867E-16 1.44628897954019E-15 1.087265555754654E-11 3.219894073637025E-8 -3.218628425210206E-8 -2.669482600017797E-10
peri 1.511307448209749E-14 -5.163790949084404E-14 9.581429366536669E-10 -3.218628425210206E-8 3.243883058174881E-8 2.668830714974681E-10
i 2.394389566983347E-17 -3.98752584571227E-17 1.961786034890485E-14 -2.669482600017797E-10 2.668830714974681E-10 1.460371497168331E-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 23 CATAB v2.0f-lin.ifort 2020-Oct-22 17:15:20 2020-Oct-22 17:15

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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