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21610 Rosengard (1999 JE48)
Classification: Main-belt Asteroid          SPK-ID: 2021610
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2382830729178708 4.3967e-08  
a 2.794256302032423 1.68e-08 au
q 2.128432323864011 1.224e-07 au
i 9.96293672825456 4.7186e-06 deg
node 256.6756158590865 2.661e-05 deg
peri 67.95775942476142 2.853e-05 deg
M 163.0651226891163 1.4535e-05 deg
tp 2458427.719123574540
(2018-Nov-05.21912357)
6.5564e-05 TDB
period 1706.073689611457
4.67
1.5387e-05
4.213e-08
d
yr
n .2110108151787903 1.903e-09 deg/d
Q 3.460080280200835 2.0804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1177  
   data-arc span      14434 days (39.52 yr)  
   first obs. used      1981-09-07  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49715  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:50:14  

Additional Information
 Earth MOID = 1.13805 au 
 Jupiter MOID = 1.97491 au 
 T_jup = 3.264 
[ 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 14.16   n/a E2021B10  

21610 Rosengard           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jamie Erin Rosengard (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for her engineering team project. She attends the Jericho High School, Jericho, New York, 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

[ show close-approach data ]
Alternate Designations
 1999 JE48 = 1981 RY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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