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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05466335918398748 4.037e-08  
a 2.31061755476798 6.8795e-09 au
q 2.184311437434871 9.2037e-08 au
i 7.07036709688628 3.9388e-06 deg
node 323.9340689998087 2.7067e-05 deg
peri 214.0527607406861 3.7336e-05 deg
M 193.6534050125917 2.6754e-05 deg
tp 2459793.291468302284
(2022-Aug-01.79146830)
9.6158e-05 TDB
period 1282.893278368433
3.51
5.7294e-06
1.569e-08
d
yr
n .2806157036365826 1.2532e-09 deg/d
Q 2.436923672101089 7.2555e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1966  
   data-arc span      12403 days (33.96 yr)  
   first obs. used      1987-02-23  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:23:31  

Additional Information
 Earth MOID = 1.19253 au 
 Jupiter MOID = 2.54401 au 
 T_jup = 3.573 
[ 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 14.69   n/a E2021B10  
rotation period rot_per 15.626 h n/a LCDB (Rev. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

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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