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20916 (4628 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2020916
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1466054647505574 5.0023e-08  
a 3.155081020615401 2.0281e-08 au
q 2.692528901262417 1.6019e-07 au
i 6.111535533732177 5.6087e-06 deg
node 18.57804655874893 3.8255e-05 deg
peri 18.71910468238351 4.1288e-05 deg
M 241.170899963489 1.7855e-05 deg
tp 2459876.169800510315
(2022-Oct-23.66980051)
0.00010589 TDB
period 2046.982835929717
5.60
1.9737e-05
5.404e-08
d
yr
n .1758685972745306 1.6958e-09 deg/d
Q 3.617633139968385 2.3255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      862  
   data-arc span      21843 days (59.80 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:34:37  

Additional Information
 Earth MOID = 1.6994 au 
 Jupiter MOID = 1.832 au 
 T_jup = 3.181 
[ 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 14.52   n/a E2021B10  
diameter diameter 7.644 km 0.370 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20916 (4628 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
 4628 P-L = 1983 VU3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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