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22722 Timothycooper (1998 SE54)
Classification: Main-belt Asteroid          SPK-ID: 2022722
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 .2509183529483562 1.7554e-08  
a 2.707271789119265 8.8928e-09 au
q 2.027967610809909 4.8071e-08 au
i 14.03481395156822 5.3494e-07 deg
node 185.6478132031382 1.4081e-06 deg
peri 34.80377150604649 4.0161e-06 deg
M 118.5469774214644 3.5535e-06 deg
tp 2458664.722837279809
(2019-Jun-30.22283728)
1.432e-05 TDB
period 1627.032445488109
4.45
8.0166e-06
2.195e-08
d
yr
n .2212617216075246 1.0902e-09 deg/d
Q 3.38657596742862 1.1124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2562  
   data-arc span      15266 days (41.80 yr)  
   first obs. used      1979-04-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:10:28  

Additional Information
 Earth MOID = 1.03681 au 
 Jupiter MOID = 1.62641 au 
 T_jup = 3.277 
[ 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 12.81   n/a E2021B10  
diameter diameter 6.328 km 0.481 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.934 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 8-10.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.032   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

22722 Timothycooper           Discovered 1998 Sept. 16 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Timothy P. Cooper (b. 1958) is the Director of the Comet and Meteor Section of the Astronomical Society of Southern Africa. He has played a leading role in coordinating and publishing records of local observations, including compiling detailed accounts of bolides.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

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Alternate Designations
 1998 SE54 = 1979 HC6 = 1999 XN137 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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