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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802331563186092 4.4546e-08  
a 2.55370987874723 9.5299e-09 au
q 2.093446686978603 1.173e-07 au
i 1.687041708718924 4.7357e-06 deg
node 336.2412513819968 0.00011023 deg
peri 16.30966043261895 0.00011074 deg
M 219.0300886223413 1.1994e-05 deg
tp 2459584.186552267765
(2022-Jan-04.68655227)
5.1823e-05 TDB
period 1490.581619601536
4.08
8.3438e-06
2.284e-08
d
yr
n .2415164626115781 1.3519e-09 deg/d
Q 3.013973070515856 1.1248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      915  
   data-arc span      10563 days (28.92 yr)  
   first obs. used      1991-02-19  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:48  

Additional Information
 Earth MOID = 1.08809 au 
 Jupiter MOID = 2.41992 au 
 T_jup = 3.415 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456402.5 (2013-Apr-20.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784764141933091 4.4465e-08  
q 2.099132231314436 1.1705e-07 au
tp 2456597.703787389048
(2013-Nov-01.20378739)
4.3026e-05 TDB
node 336.318731192546 0.00011001 deg
peri 15.52717212645826 0.00011054 deg
i 1.690342054187913 4.7332e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      915  
   data-arc span      10563 days (28.92 yr)  
   first obs. used      1991-02-19  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:48  

Additional Information
 Jupiter MOID = 2.41992 au 
 T_jup = 3.415 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.977165733437426E-15 -5.195049714206264E-15 -7.620751172725944E-13 5.875489892173371E-15 -1.835090280298711E-13 -2.080533239572974E-16
q -5.195049714206264E-15 1.37011206058443E-14 2.100992704822022E-12 -1.638131662907568E-14 5.044198555320818E-13 5.432389840568645E-16
tp -7.620751172725944E-13 2.100992704822022E-12 1.851207847265052E-9 -7.257413861387566E-12 4.706532229068128E-10 1.036358641475179E-13
node 5.875489892173371E-15 -1.638131662907568E-14 -7.257413861387566E-12 1.210219605007029E-8 -1.209832219997653E-8 -5.220345174184999E-12
peri -1.835090280298711E-13 5.044198555320818E-13 4.706532229068128E-10 -1.209832219997653E-8 1.221830676364051E-8 5.242479085792228E-12
i -2.080533239572974E-16 5.432389840568645E-16 1.036358641475179E-13 -5.220345174184999E-12 5.242479085792228E-12 2.240308999015864E-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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