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21699 Wolpert (1999 RE64)
Classification: Main-belt Asteroid          SPK-ID: 2021699
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743601473968625 3.8617e-08  
a 3.120813821781582 1.5329e-08 au
q 2.57666826381758 1.2149e-07 au
i 3.018724496970696 3.7125e-06 deg
node 81.78767618501091 7.3907e-05 deg
peri 319.5734934359986 7.4501e-05 deg
M 305.8162660532923 9.6143e-06 deg
tp 2459699.586538242800
(2022-Apr-30.08653824)
5.4835e-05 TDB
period 2013.725260697684
5.51
1.4836e-05
4.062e-08
d
yr
n .1787731459828203 1.3171e-09 deg/d
Q 3.664959379745584 1.8001e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1605  
   data-arc span      17838 days (48.84 yr)  
   first obs. used      1972-10-06  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:45:03  

Additional Information
 Earth MOID = 1.58551 au 
 Jupiter MOID = 1.74883 au 
 T_jup = 3.190 
[ 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 13.82   n/a E2021B10  
diameter diameter 10.259 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 87.848 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.061   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21699 Wolpert           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Maya Nina Wolpert (b. 1988) was awarded first place and Best in Category in the 2006 Intel International Science and Engineering Fair for her behavioral and social sciences project. She attends the Hathaway Brown School, Shaker Heights, Ohio, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

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Alternate Designations
 1999 RE64 = 1972 TU7 = 1989 YM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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