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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04176313770115554 4.71e-08  
a 2.329285251437836 8.6047e-09 au
q 2.232006990736767 1.1115e-07 au
i 6.641909192704265 6.357e-06 deg
node 28.84668780295067 3.5121e-05 deg
peri 107.3876002420699 8.0885e-05 deg
M 155.500368019048 7.1728e-05 deg
tp 2458439.631095663163
(2018-Nov-17.13109566)
0.00025871 TDB
period 1298.471560765233
3.56
7.1951e-06
1.97e-08
d
yr
n .2772490448599735 1.5363e-09 deg/d
Q 2.426563512138906 8.9641e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1301  
   data-arc span      21413 days (58.63 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50263  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:56:39  

Additional Information
 Earth MOID = 1.25457 au 
 Jupiter MOID = 2.56502 au 
 T_jup = 3.562 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456382.5 (2013-Mar-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04184059495080998 4.6874e-08  
q 2.231068810901133 1.1057e-07 au
tp 2455843.795005918538
(2011-Oct-09.29500592)
0.00025831 TDB
node 28.93804098943582 3.5111e-05 deg
peri 107.1284791250437 8.0779e-05 deg
i 6.643819025289264 6.3566e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1301  
   data-arc span      21413 days (58.63 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50263  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:56:39  

Additional Information
 Jupiter MOID = 2.56502 au 
 T_jup = 3.562 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.197182041822155E-15 -5.168962537046048E-15 6.521011647348122E-12 6.610998495235895E-16 1.867743840080284E-12 -6.988590633188302E-16
q -5.168962537046048E-15 1.222587446028408E-14 -1.529156598989227E-11 -1.909631313879943E-15 -4.374466827798869E-12 1.699004319455596E-15
tp 6.521011647348122E-12 -1.529156598989227E-11 6.672360577070431E-8 -2.013597658194665E-11 1.880189268451502E-8 2.900752902682301E-12
node 6.610998495235895E-16 -1.909631313879943E-15 -2.013597658194665E-11 1.232787287471432E-9 -1.22955998843094E-9 -7.603257408879602E-11
peri 1.867743840080284E-12 -4.374466827798869E-12 1.880189268451502E-8 -1.22955998843094E-9 6.525234812939457E-9 7.629137953394969E-11
i -6.988590633188302E-16 1.699004319455596E-15 2.900752902682301E-12 -7.603257408879602E-11 7.629137953394969E-11 4.04063528119543E-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 14.8   n/a MPO435894  
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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