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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221187636951537 3.1291e-08  
a 2.401414630117481 6.8827e-09 au
q 1.870251402740946 7.5743e-08 au
i 2.461419626213713 3.4637e-06 deg
node 167.7906388768271 9.6746e-05 deg
peri 182.4343486332102 9.7191e-05 deg
M 75.43942949933421 1.0024e-05 deg
tp 2458915.663887512607
(2020-Mar-07.16388751)
3.7258e-05 TDB
period 1359.249416067846
3.72
5.8436e-06
1.6e-08
d
yr
n .2648520541884351 1.1386e-09 deg/d
Q 2.932577857494016 8.405e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1154  
   data-arc span      22056 days (60.39 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:05:00  

Additional Information
 Earth MOID = .862496 au 
 Jupiter MOID = 2.50017 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 15.27   n/a E2021B10  

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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