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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .331356336917276 7.5688e-08  
a 2.705640025667681 2.4419e-08 AU
q 1.809109057745673 2.0234e-07 AU
i 16.81293427398775 7.2195e-06 deg
node 69.62474406204419 2.9886e-05 deg
peri 264.4626090762077 3.095e-05 deg
M 192.1990804351962 1.4241e-05 deg
tp 2457758.196506883559
(2017-Jan-04.69650688)
7.0258e-05 JED
period 1625.561666679298
4.45
2.2007e-05
6.025e-08
d
yr
n .2214619152132254 2.9981e-09 deg/d
Q 3.602170993589689 3.2511e-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 = .889793 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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