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20529 Zwerling (1999 RM53)
Classification: Main-belt Asteroid          SPK-ID: 2020529
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318668211474183 3.3756e-08  
a 2.392046773147666 8.2529e-09 au
q 2.076615169136744 7.969e-08 au
i 6.035432330234181 4.7053e-06 deg
node 196.2435375478321 2.8667e-05 deg
peri 232.2174638017279 3.3589e-05 deg
M 135.691890442916 1.681e-05 deg
tp 2458491.164062184783
(2019-Jan-07.66406218)
6.273e-05 TDB
period 1351.303582070851
3.70
6.9933e-06
1.915e-08
d
yr
n .266409417377778 1.3787e-09 deg/d
Q 2.707478377158589 9.3411e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1416  
   data-arc span      14119 days (38.66 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:02:18  

Additional Information
 Earth MOID = 1.09652 au 
 Jupiter MOID = 2.58251 au 
 T_jup = 3.512 
[ 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 15.1   n/a MPO350965  
rotation period rot_per 86.3723 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

20529 Zwerling           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Blake Gordon Zwerling (b. 1989) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her biochemistry, medicine, health, and microbiology project. She attends the Portland Jewish Academy, Portland, Oregon.
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 RM53 = 1981 UR24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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