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12378 (1994 PK1)
Classification: Main-belt Asteroid          SPK-ID: 2012378
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3322183961610959 7.5866e-08  
a 2.703615437773113 2.3978e-08 au
q 1.80542465319975 2.0283e-07 au
i 16.81916744452152 7.2225e-06 deg
node 69.56337098982642 2.9888e-05 deg
peri 264.5975915945742 3.0928e-05 deg
M 280.7851786425525 1.4874e-05 deg
tp 2457757.789085611768
(2017-Jan-04.28908561)
7.0019e-05 JED
period 1623.737434688332
4.45
2.1601e-05
5.914e-08
d
yr
n .2217107226262232 2.9495e-09 deg/d
Q 3.601806222346476 3.1944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      8991 days (24.62 yr)  
   first obs. used      1990-10-21  
   last obs. used      2015-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58847  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:09:31  

Additional Information
 Earth MOID = .884282 au 
 Jupiter MOID = 2.11611 au 
 T_jup = 3.226 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO319239  

12378 (1994 PK1)          Discovered 1994-Aug-15 by McNaught, R. H. at Siding Spring
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PK1 = 1990 US6 = 1998 JT2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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