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27971 (1997 TO12)
Classification: Main-belt Asteroid          SPK-ID: 2027971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180233161905909 4.4069e-08  
a 2.553709879290633 9.4951e-09 au
q 2.093446673155725 1.1621e-07 au
i 1.687040836601609 4.5377e-06 deg
node 336.2412733615264 0.00010625 deg
peri 16.30963512022099 0.00010672 deg
M 219.0300909831063 1.1709e-05 deg
tp 2459584.186542679311
(2022-Jan-04.68654268)
5.0738e-05 TDB
period 1490.581620077307
4.08
8.3133e-06
2.276e-08
d
yr
n .2415164625344897 1.347e-09 deg/d
Q 3.013973085425541 1.1206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      10659 days (29.18 yr)  
   first obs. used      1991-02-19  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:24:43  

Additional Information
 Earth MOID = 1.08809 au 
 Jupiter MOID = 2.41992 au 
 T_jup = 3.415 
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Orbital Elements at Epoch 2456621.5 (2013-Nov-25.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783305167844748 4.3969e-08  
q 2.099126829885964 1.1587e-07 au
tp 2456597.767150629884
(2013-Nov-01.26715063)
4.1357e-05 TDB
node 336.3172971938038 0.00010602 deg
peri 15.54867070932046 0.00010651 deg
i 1.690479364560353 4.5349e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      10659 days (29.18 yr)  
   first obs. used      1991-02-19  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:24:43  

Additional Information
 Jupiter MOID = 2.41992 au 
 T_jup = 3.415 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.933245725075612E-15 -5.085347844541999E-15 -6.861281874072317E-13 2.694096778552528E-15 -1.557321818413624E-13 -4.54927448092042E-17
q -5.085347844541999E-15 1.342665029957936E-14 1.912266274171728E-12 -8.009013931171942E-15 4.350276347929845E-13 1.276279482585317E-16
tp -6.861281874072317E-13 1.912266274171728E-12 1.710381685905058E-9 -6.453176466541801E-12 4.249987486405319E-10 4.621892556341727E-14
node 2.694096778552528E-15 -8.009013931171942E-15 -6.453176466541801E-12 1.124124671905516E-8 -1.123759527946661E-8 3.317451638861972E-11
peri -1.557321818413624E-13 4.350276347929845E-13 4.249987486405319E-10 -1.123759527946661E-8 1.134347130689461E-8 -3.314969880851786E-11
i -4.54927448092042E-17 1.276279482585317E-16 4.621892556341727E-14 3.317451638861972E-11 -3.314969880851786E-11 2.056544146802971E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO426075  

27971 (1997 TO12)          Discovered 1997-Oct-02 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 TO12 = 1999 CX134 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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