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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .331356339453164 7.6918e-08  
a 2.705640025895991 2.5279e-08 AU
q 1.809109051037132 2.0498e-07 AU
i 16.81293360475405 8.181e-06 deg
node 69.62474375890216 3.0062e-05 deg
peri 264.4626095772646 3.1521e-05 deg
M 192.1990801493316 1.4314e-05 deg
tp 2457758.196508270271
(2017-Jan-04.69650827)
7.0367e-05 JED
period 1625.561666885053
4.45
2.2782e-05
6.237e-08
d
yr
n .221461915185194 3.1037e-09 deg/d
Q 3.602171000754851 3.3656e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      8835 days (24.19 yr)  
   first obs. used      1990-10-21  
   last obs. used      2014-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57969  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:15:46  

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 (413)
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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