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146268 Jennipolakis (2001 DQ)
Classification: Main-belt Asteroid          SPK-ID: 2146268
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1493651140015211 4.4436e-08  
a 2.301698372019581 1.1411e-08 au
q 1.957904932285761 1.0202e-07 au
i 3.328408957815851 6.3172e-06 deg
node 166.3720191953146 8.8328e-05 deg
peri 80.96390415084115 9.1293e-05 deg
M 125.813271097227 2.1659e-05 deg
tp 2458554.746259808894
(2019-Mar-12.24625981)
7.6478e-05 TDB
period 1275.472333477347
3.49
9.485e-06
2.597e-08
d
yr
n .2822483801107033 2.0989e-09 deg/d
Q 2.645491811753402 1.3115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      21580 days (59.08 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:36:00  

Additional Information
 Earth MOID = .947683 au 
 Jupiter MOID = 2.37878 au 
 T_jup = 3.574 
[ 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 17.2   n/a MPO236915  

146268 Jennipolakis           Discovered 2001 Feb. 16 by D. Healy at Junk Bond Observatory.
Jennifer Polakis (b. 1959) is an American amateur astronomer, eclipse chaser and popularizer of astronomy. She has served as an officer of the Saguaro Astronomy Club of Phoenix, Arizona. She is the wife of professional engineer and amateur astronomer Tom Polakis.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

[ show close-approach data ]
Alternate Designations
 2001 DQ = 1995 SB76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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