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

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2879500017015948 5.5501e-08  
a 2.637482106108051 1.9389e-08 au
q 1.878019129166312 1.4999e-07 au
i 12.21893218067809 5.7836e-06 deg
node 123.5071850686328 2.8146e-05 deg
peri 273.3366125087924 2.9913e-05 deg
M 217.913183307615 1.2319e-05 deg
tp 2458217.995779139624
(2018-Apr-09.49577914)
5.7359e-05 JED
period 1564.525729164135
4.28
1.7252e-05
4.723e-08
d
yr
n .2301016808412182 2.5373e-09 deg/d
Q 3.39694508304979 2.4972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1171  
   data-arc span      12327 days (33.75 yr)  
   first obs. used      1982-07-21  
   last obs. used      2016-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50643  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:23:45  

Additional Information
 Earth MOID = .930393 au 
 Jupiter MOID = 2.19084 au 
 T_jup = 3.306 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO267768  
diameter diameter 12.16 km 0.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 5.897 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2010) Minor Planet Bul. 37, 50-53.]
[Warner, B.D. (2010) Minor Planet Bul. 37, 112-118.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]
geometric albedo albedo 0.1194   0.021 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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