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20426 Fridlund (1998 VW44)
Classification: Main-belt Asteroid          SPK-ID: 2020426
[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1227577692775308 3.7448e-08  
a 3.141814539398148 1.9819e-08 au
q 2.756132395057919 1.1588e-07 au
i 19.22271774698553 4.3416e-06 deg
node 93.71887756240724 1.2306e-05 deg
peri 149.5818211214103 2.2702e-05 deg
M 93.97644068761939 1.7207e-05 deg
tp 2458669.510740999100
(2019-Jul-05.01074100)		 9.7774e-05 TDB
period 2034.085690430997
5.57		 1.9247e-05
5.27e-08		 d
yr
n .1769836942925057 1.6747e-09 deg/d
Q 3.527496683738378 2.2252e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1580  
   data-arc span      10834 days (29.66 yr)  
   first obs. used      1991-04-15  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:20:22  

Additional Information
 Earth MOID = 1.75494 au 
 Jupiter MOID = 1.61594 au 
 T_jup = 3.113 
[ 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 13.21   n/a E2021B10  

20426 Fridlund           Discovered 1998 Nov. 13 by C.-I. Lagerkvist at the European Southern Observatory.
Malcolm Fridlund (b. 1952) worked at ESA on projects such as Darwin and Corot.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-03-31Last Updated: 2018-04-05

[ show close-approach data ]
Alternate Designations
 1998 VW44 = 1991 GD2 = 1999 VP223 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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