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249523 Friedan (2010 DO53)
Classification: Main-belt Asteroid          SPK-ID: 2249523
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1928477592305744 6.7248e-08  
a 3.187785970589797 3.8654e-08 au
q 2.573028589254893 2.1686e-07 au
i 27.54260055479579 7.3282e-06 deg
node 201.6550040559613 9.6886e-06 deg
peri 155.5446940501433 1.8033e-05 deg
M 249.0286161996777 1.8036e-05 deg
tp 2460037.326791380536
(2023-Apr-02.82679138)
0.00011172 TDB
period 2078.893107362717
5.69
3.7812e-05
1.035e-07
d
yr
n .1731690767192431 3.1497e-09 deg/d
Q 3.802543351924701 4.6108e-08 au
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      7561 days (20.70 yr)  
   first obs. used      2000-10-01  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62189  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 04:26:43  

Additional Information
 Earth MOID = 1.58908 au 
 Jupiter MOID = 1.73548 au 
 T_jup = 2.994 
[ 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 15.29   n/a E2021B55  
diameter diameter 5.430 km 1.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.055   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249523 Friedan           Discovered 2010 Feb. 22 at WISE.
Betty Friedan (1921-2006) was an author and social activist who wrote The Feminine Mystique, a book that made an enormous impact on women's lives. She was a founder of the National Organization for Women and a convener of the National Women's Political Caucus.
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 2016-02-22Last Updated: 2016-02-25

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