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15646 (4555 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2015646
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2211063643033888 3.3344e-08  
a 2.400921981673344 7.0555e-09 au
q 1.870062851329463 8.0942e-08 au
i 2.461488221429268 3.6275e-06 deg
node 167.7950140660423 9.7878e-05 deg
peri 182.3884577516785 9.8333e-05 deg
M 22.50215895662804 9.9577e-06 deg
tp 2458915.564903201595
(2020-Mar-07.06490320)
3.7417e-05 TDB
period 1358.83116399458
3.72
5.9897e-06
1.64e-08
d
yr
n .2649335763993679 1.1678e-09 deg/d
Q 2.931781112017224 8.6155e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1062  
   data-arc span      21858 days (59.84 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50786  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:01:20  

Additional Information
 Earth MOID = .864052 au 
 Jupiter MOID = 2.50019 au 
 T_jup = 3.491 
[ 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 15.2   n/a MPO435845  

15646 (4555 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 4555 P-L = 1992 EK31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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