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15967 Clairearmstrong (1998 DN20)
Classification: Main-belt Asteroid          SPK-ID: 2015967
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2882183376202982 3.4964e-08  
a 2.636981805431829 1.2755e-08 au
q 1.876955293135294 9.5004e-08 au
i 12.22026425443861 3.6455e-06 deg
node 123.50295488145 1.9323e-05 deg
peri 273.1865278512349 2.0633e-05 deg
M 180.2282684141046 1.0629e-05 deg
tp 2459781.548544899100
(2022-Jul-21.04854490)
4.9979e-05 TDB
period 1564.080590887164
4.28
1.1348e-05
3.107e-08
d
yr
n .2301671679179932 1.6699e-09 deg/d
Q 3.397008317728363 1.6431e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2249  
   data-arc span      13889 days (38.03 yr)  
   first obs. used      1982-07-21  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:03:08  

Additional Information
 Earth MOID = .930696 au 
 Jupiter MOID = 2.19214 au 
 T_jup = 3.306 
[ 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 13.0   n/a MPO473981  
diameter diameter 14.430 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.897 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2010) Minor Planet Bull. 37, 50-53.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 112-118.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.086   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

15967 Clairearmstrong           Discovered 1998 Feb. 24 by M. Armstrong at Rolvenden.
Claire Armstrong, the wife of supernova discoverer Mark Armstrong, has provided unwavering support throughout the years of Mark's patrol. A large degree of Mark's success is due to Claire's support, which extends to practical help also: she co-discovered minor planet 1997 WQ28 with him.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1998 DN20 = 1989 CG7 = 1999 JB84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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