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22944 Sarahmarzen (1999 TB216)
Classification: Main-belt Asteroid          SPK-ID: 2022944
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09200029623085788 3.2973e-08  
a 2.270185852732673 7.4822e-09 au
q 2.061328081782164 7.3784e-08 au
i 3.726362876375577 4.1416e-06 deg
node 153.2426226947077 5.5158e-05 deg
peri 85.8202200589885 5.9652e-05 deg
M 210.1926880779745 2.2965e-05 deg
tp 2459720.401483645808
(2022-May-20.90148365)
8.0331e-05 TDB
period 1249.368483495051
3.42
6.1766e-06
1.691e-08
d
yr
n .2881455749491268 1.4245e-09 deg/d
Q 2.479043623683182 8.1705e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1220  
   data-arc span      10902 days (29.85 yr)  
   first obs. used      1991-04-08  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51572  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:59  

Additional Information
 Earth MOID = 1.05173 au 
 Jupiter MOID = 2.51559 au 
 T_jup = 3.605 
[ 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 15.5   n/a MPO337452  

22944 Sarahmarzen           Discovered 1999 Oct. 15 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sarah Elizabeth Marzen (b. 1989) is a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors, for her chemistry project. She attends the Thomas Jefferson High School for Science and Technology, Alexandria, Virginia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070303/MPCPages.arcLast Updated: 2010-04-12

[ show close-approach data ]
Alternate Designations
 1999 TB216 = 1991 HK2 = 1998 KC20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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