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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05433590755322027 4.1878e-08  
a 2.311398325360792 7.9449e-09 au
q 2.185806399635319 9.6645e-08 au
i 7.069524035652377 3.9884e-06 deg
node 323.9326198465795 3.301e-05 deg
peri 214.2159022715993 4.6851e-05 deg
M 137.3746734196318 3.2294e-05 deg
tp 2458510.704500226831
(2019-Jan-27.20450023)
0.00011534 TDB
period 1283.543578514832
3.51
6.6178e-06
1.812e-08
d
yr
n .2804735312661143 1.4461e-09 deg/d
Q 2.436990251086264 8.3765e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      11820 days (32.36 yr)  
   first obs. used      1987-02-23  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50197  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:08:16  

Additional Information
 Earth MOID = 1.19444 au 
 Jupiter MOID = 2.54492 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-August); 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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