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21204 (1994 PH26)
Classification: Main-belt Asteroid          SPK-ID: 2021204
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0296266076131679 3.1775e-08  
a 2.894966611631279 1.3921e-08 au
q 2.809198571775256 9.6575e-08 au
i 2.689673804772554 4.6142e-06 deg
node 52.31302203750886 0.00010622 deg
peri 45.07957837488221 0.00015349 deg
M 39.98913361524696 0.00010941 deg
tp 2459196.650410733925
(2020-Dec-13.15041073)
0.00054693 TDB
period 1799.135055738135
4.93
1.2977e-05
3.553e-08
d
yr
n .200096151120963 1.4433e-09 deg/d
Q 2.980734651487301 1.4334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1599  
   data-arc span      11151 days (30.53 yr)  
   first obs. used      1990-11-23  
   last obs. used      2021-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49662  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:31:25  

Additional Information
 Earth MOID = 1.82694 au 
 Jupiter MOID = 2.05361 au 
 T_jup = 3.287 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.96   n/a MPCxxxxx  

21204 (1994 PH26)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PH26 = 1992 ED35 = 1992 EX36 = 1999 RP151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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