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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2881096247199324 2.3363e-08  
a 2.637945498548699 1.2036e-08 au
q 1.877928010930198 6.3844e-08 au
i 12.21997625685298 1.6838e-06 deg
node 123.5034337658605 9.9238e-06 deg
peri 273.0905292760673 1.4387e-05 deg
M 271.4899484697199 9.3566e-06 deg
tp 2459781.257635809183
(2022-Jul-20.75763581)
4.2506e-05 TDB
period 1564.938066315771
4.28
1.071e-05
2.932e-08
d
yr
n .2300410525814122 1.5744e-09 deg/d
Q 3.397962986167199 1.5504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2369  
   data-arc span      14257 days (39.03 yr)  
   first obs. used      1982-07-21  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47179  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:05:30  

Additional Information
 Earth MOID = .931048 au 
 Jupiter MOID = 2.19371 au 
 T_jup = 3.305 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457149.5 (2015-May-07.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2871954433555654 2.3182e-08  
q 1.881281451966565 6.3182e-08 au
tp 2456653.285169274051
(2013-Dec-26.78516927)
3.1324e-05 TDB
node 123.5309224538112 9.9213e-06 deg
peri 273.4016658219573 1.4423e-05 deg
i 12.21972034602442 1.6835e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2369  
   data-arc span      14257 days (39.03 yr)  
   first obs. used      1982-07-21  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47179  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:05:30  

Additional Information
 Jupiter MOID = 2.19371 au 
 T_jup = 3.305 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.374134869180189E-16 -1.45122923376161E-15 -7.223264701476823E-14 1.509062580498474E-13 -1.97867696908363E-13 2.731473567006385E-14
q -1.45122923376161E-15 3.991978802677145E-15 2.620811908038375E-13 -4.133136450058827E-13 5.562425585690154E-13 -7.434905319133471E-14
tp -7.223264701476823E-14 2.620811908038375E-13 9.812093680445532E-10 -1.655838329187156E-10 3.418068888062119E-10 -2.76723166970199E-11
node 1.509062580498474E-13 -4.133136450058827E-13 -1.655838329187156E-10 9.843206546466608E-11 -1.358452037648571E-10 1.444291855662536E-11
peri -1.97867696908363E-13 5.562425585690154E-13 3.418068888062119E-10 -1.358452037648571E-10 2.080097403879653E-10 -2.103571190851849E-11
i 2.731473567006385E-14 -7.434905319133471E-14 -2.76723166970199E-11 1.444291855662536E-11 -2.103571190851849E-11 2.834249003426752E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.01   n/a MPO636304  
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. 2020-October); 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

Alternate Designations
 1998 DN20 = 1989 CG7 = 1999 JB84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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