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9497 Dwingeloo (1001 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2009497
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1002618637000218 4.2609e-08  
a 2.947594357325302 2.1794e-08 au
q 2.652063053628199 1.2809e-07 au
i 2.254436857268086 5.5015e-06 deg
node 178.9871468234311 0.00011796 deg
peri 264.5611415058979 0.00012226 deg
M 98.40181213491452 2.9275e-05 deg
tp 2457095.256660378271
(2015-Mar-13.75666038)
0.00015076 JED
period 1848.417202057663
5.06
2.05e-05
5.613e-08
d
yr
n .1947612257661566 2.16e-09 deg/d
Q 3.243125661022405 2.3979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1507  
   data-arc span      24131 days (66.07 yr)  
   first obs. used      1950-03-22  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48983  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:05:35  

Additional Information
 Earth MOID = 1.66763 au 
 Jupiter MOID = 1.95795 au 
 T_jup = 3.262 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO319204  

9497 Dwingeloo           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
The Dwingeloo 25-m radio telescope in The Netherlands supported investigations of the 21-cm emission from hydrogen in our Galaxy. Its principal contributions include the discoveries of the 3-kpc arm and the high-velocity-cloud phenomenon, as well as studies of the galactic center. The name was suggested by W. A. Froger.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1001 T-2 = 1993 PA7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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