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JPL Small-Body Database Browser
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20537 Sandraderosa (1999 RO82)
Classification: Main-belt Asteroid          SPK-ID: 2020537
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05357932213168989 4.2178e-08  
a 2.311092801722683 7.9129e-09 au
q 2.187266016022953 9.7233e-08 au
i 7.066058821190572 4.0788e-06 deg
node 323.9725956686599 3.3066e-05 deg
peri 214.0466681599769 4.7399e-05 deg
M 25.38653634152877 3.312e-05 deg
tp 2458510.004818671555
(2019-Jan-26.50481867)
0.00011809 TDB
period 1283.28909623432
3.51
6.5908e-06
1.804e-08
d
yr
n .2805291504902387 1.4408e-09 deg/d
Q 2.434919587422412 8.3369e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      11765 days (32.21 yr)  
   first obs. used      1987-02-23  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49766  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:53:16  

Additional Information
 Earth MOID = 1.19633 au 
 Jupiter MOID = 2.54833 au 
 T_jup = 3.572 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO474035  
rotation period rot_per 15.626 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

20537 Sandraderosa           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sandra DeRosa mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Ledyard Middle School, Gales Ferry, Connecticut.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RO82 = 1987 DU2 = 1998 JN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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