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20919 (6606 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2020919
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04225850103162101 4.1262e-08  
a 2.328182172610425 7.8391e-09 au
q 2.229796683867365 9.5943e-08 au
i 6.64317657639021 4.9022e-06 deg
node 28.80921854883535 3.4264e-05 deg
peri 107.7736589354096 6.4537e-05 deg
M 210.5935555154742 5.5826e-05 deg
tp 2459739.006185249958
(2022-Jun-08.50618525)
0.00020208 TDB
period 1297.549294870364
3.55
6.5534e-06
1.794e-08
d
yr
n .2774461066128258 1.4013e-09 deg/d
Q 2.426567661353484 8.1704e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      22015 days (60.27 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49654  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:34:44  

Additional Information
 Earth MOID = 1.25209 au 
 Jupiter MOID = 2.56393 au 
 T_jup = 3.563 
[ show covariance matrix ]

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 14.83   n/a MPCxxxxx  
diameter diameter 2.153 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.264   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20919 (6606 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 6606 P-L = 1998 HH94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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