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 ]  
21023 (1989 DK)
Classification: Main-belt Asteroid          SPK-ID: 2021023
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1034171218795729 8.4274e-08  
a 2.60398747807392 2.0416e-08 AU
q 2.334690587681068 2.1897e-07 AU
i 11.91822397411697 8.9101e-06 deg
node 298.3767282831959 3.0413e-05 deg
peri 174.5590753420551 5.8221e-05 deg
M 80.06329483110636 4.2955e-05 deg
tp 2456659.159577334977
(2014-Jan-01.65957734)
0.00018365 JED
period 1534.817576751358
4.20
1.805e-05
4.942e-08
d
yr
n .2345555624675521 2.7585e-09 deg/d
Q 2.873284368466773 2.2527e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      23434 days (64.16 yr)  
   first obs. used      1951-03-28  
   last obs. used      2015-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44268  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:38:28  

Additional Information
 Earth MOID = 1.35138 AU 
 T_jup = 3.375 
[ 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 12.7 mag n/a MPO279733  
rotation period rot_per 7.598 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Published Reference List:
[Albers, K.; Kragh, K.; Monnier, A.; Pligge, Z.; et al. (2010) Minor Planet Bul. 37, 152-158.]

21023 (1989 DK)          Discovered 1989-Feb-28 by Debehogne, H. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 DK = 1979 YY = 1993 AE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jul-03 15:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin