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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3313563450212485 7.7503e-08  
a 2.705640030437555 2.5809e-08 AU
q 1.809109039008587 2.0618e-07 AU
i 16.81293933518401 8.7752e-06 deg
node 69.62474327513027 3.0063e-05 deg
peri 264.4626061490545 3.1794e-05 deg
M 192.1990815742355 1.4372e-05 deg
tp 2457758.196503743942
(2017-Jan-04.69650374)
7.0461e-05 JED
period 1625.561670977943
4.45
2.3259e-05
6.368e-08
d
yr
n .2214619146275902 3.1688e-09 deg/d
Q 3.602171021866523 3.4361e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      8527 days (23.35 yr)  
   first obs. used      1990-10-21  
   last obs. used      2014-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57924  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:21:25  

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 14.0 mag n/a PDS3 (MPC 36707)  

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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