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25924 Douglasadams (2001 DA42)
Classification: Main-belt Asteroid          SPK-ID: 2025924
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1660157995967852 2.9609e-08  
a 2.414764993185448 9.2967e-09 au
q 2.01387585200344 7.3852e-08 au
i 1.727550014424476 4.2171e-06 deg
node 307.2479627084758 0.00012474 deg
peri 313.6283925353154 0.00012559 deg
M 313.8833090352491 1.4665e-05 deg
tp 2459176.076493198275
(2020-Nov-22.57649320)
5.5877e-05 TDB
period 1370.600019842955
3.75
7.9151e-06
2.167e-08
d
yr
n .2626586858223228 1.5168e-09 deg/d
Q 2.815654134367455 1.084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      8510 days (23.30 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55885  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:58:38  

Additional Information
 Earth MOID = .998903 au 
 Jupiter MOID = 2.253 au 
 T_jup = 3.498 
[ 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 15.7   n/a MPO426059  
diameter diameter 2.410 km 0.528 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

25924 Douglasadams           Discovered 2001 Feb. 19 by LINEAR at Socorro.
The provisional designation of this object is singularly appropriate to honor Douglas Adams (1952-2001), author of The Hitchhiker's Guide to the Galaxy. In their cosmic travels following the earth's destruction, his two protagonists ascertained that the answer to Life, the Universe and Everything was the number 42.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

[ show close-approach data ]
Alternate Designations
 2001 DA42 = 1999 VX149 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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