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15645 (4163 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2015645
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01412434950413904 4.4785e-08  
a 3.009532750352343 1.7865e-08 au
q 2.967025057942213 1.3386e-07 au
i 3.866744252311922 3.7163e-06 deg
node 228.3400779338156 7.3307e-05 deg
peri 86.83265513226516 0.00017678 deg
M 201.8989272253323 0.0001638 deg
tp 2459837.989466750871
(2022-Sep-15.48946675)		 0.00087036 TDB
period 1906.983948553078
5.22		 1.698e-05
4.649e-08		 d
yr
n .1887797746138081 1.6809e-09 deg/d
Q 3.052040442762472 1.8117e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1250  
   data-arc span      21807 days (59.70 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:18  

Additional Information
 Earth MOID = 1.95593 au 
 Jupiter MOID = 1.97381 au 
 T_jup = 3.246 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457115.5 (2015-Apr-03.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01252715207672504 4.3713e-08  
q 2.974165223491298 1.3056e-07 au
tp 2457899.206568597748
(2017-May-25.70656860)		 0.00099871 TDB
node 228.411507428474 7.3376e-05 deg
peri 80.64698622296274 0.0001999 deg
i 3.863539156637281 3.7141e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1250  
   data-arc span      21807 days (59.70 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:18  

Additional Information
 Jupiter MOID = 1.97381 au 
 T_jup = 3.246 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.910841249940461E-15 -5.654814500096935E-15 1.063468605074242E-11 -2.09926664620994E-16 1.972863149480714E-12 1.392201515255536E-15
q -5.654814500096935E-15 1.704515203023161E-14 -2.55977120953518E-11 7.036650575658613E-16 -4.766891691606302E-12 -4.112803840016143E-15
tp 1.063468605074242E-11 -2.55977120953518E-11 9.974252207747584E-7 1.101732746906311E-10 1.857419460600873E-7 1.007499260286188E-11
node -2.09926664620994E-16 7.036650575658613E-16 1.101732746906311E-10 5.384083269464175E-9 -5.350876634769968E-9 -1.99558927879426E-11
peri 1.972863149480714E-12 -4.766891691606302E-12 1.857419460600873E-7 -5.350876634769968E-9 3.99588869073864E-8 2.180792021116418E-11
i 1.392201515255536E-15 -4.112803840016143E-15 1.007499260286188E-11 -1.99558927879426E-11 2.180792021116418E-11 1.379466422837214E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO467863  
diameter diameter 4.010 km 1.296 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.638 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.252   0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15645 (4163 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

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Alternate Designations
 4163 P-L = 2000 GF106 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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