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249541 Steinem (2010 HR25)
Classification: Main-belt Asteroid          SPK-ID: 2249541
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09295500584258683 6.4785e-08  
a 3.053914438831465 4.5273e-08 au
q 2.770037804327126 2.0622e-07 au
i 9.504227671932867 8.3978e-06 deg
node 274.9993780425334 6.6976e-05 deg
peri 350.0146181212119 0.00011099 deg
M 257.4811985644765 9.2702e-05 deg
tp 2459155.617277061096
(2020-Nov-02.11727706)
0.00050619 TDB
period 1949.322631007154
5.34
4.3347e-05
1.187e-07
d
yr
n .1846795365085354 4.1067e-09 deg/d
Q 3.337791073335804 4.9481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      6344 days (17.37 yr)  
   first obs. used      2001-12-15  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52597  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:27:41  

Additional Information
 Earth MOID = 1.75424 au 
 Jupiter MOID = 1.76644 au 
 T_jup = 3.208 
[ 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 15.3   n/a MPO433635  
diameter diameter 5.257 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249541 Steinem           Discovered 2010 Apr. 19 at WISE.
Gloria Steinem (b. 1934) is a writer and journalist who co-founded Ms. Magazine and the Ms. Foundation for Women. She also co-founded the Women's Media Center and has been awarded the Presidential Medal of Freedom for her activism.
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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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