Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2877277103708653 5.7662e-08  
a 2.637889804874023 2.0411e-08 au
q 1.878895811106972 1.5478e-07 au
i 12.21859888946561 6.6476e-06 deg
node 123.5150144585088 2.8796e-05 deg
peri 273.3457340978626 3.137e-05 deg
M 171.8635359242031 1.2463e-05 deg
tp 2456653.424244102748
(2013-Dec-26.92424410)
5.1531e-05 JED
period 1564.888506900174
4.28
1.8163e-05
4.973e-08
d
yr
n .2300483378928444 2.6701e-09 deg/d
Q 3.396883798641075 2.6284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1110  
   data-arc span      12016 days (32.90 yr)  
   first obs. used      1982-07-21  
   last obs. used      2015-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50039  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:44:39  

Additional Information
 Earth MOID = .931329 au 
 Jupiter MOID = 2.1921 au 
 T_jup = 3.305 
[ 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. 2015-December); 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. (2015) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-08 12:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin