Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
68719 Jangyeongsil (2002 DW)
Classification: Main-belt Asteroid          SPK-ID: 2068719
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101200027238175 2.8699e-08  
a 2.467663026788392 1.239e-08 au
q 2.21793546126277 6.897e-08 au
i 4.8798100575096 5.7058e-06 deg
node 171.7066296107516 4.7192e-05 deg
peri 124.7071600822524 5.9131e-05 deg
M 33.4154050473966 3.51e-05 deg
tp 2458469.076981723797
0.00013781 TDB
period 1415.882480320835
n .254258390087873 1.9149e-09 deg/d
Q 2.717390592314015 1.3644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      798  
   data-arc span      10400 days (28.47 yr)  
   first obs. used      1991-06-08  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52313  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:01:39  

Additional Information
 Earth MOID = 1.20589 au 
 Jupiter MOID = 2.44638 au 
 T_jup = 3.474 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO400653  
diameter diameter 4.177 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 61.336 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.034   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

68719 Jangyeongsil           Discovered 2002 Feb. 16 by Y.-B. Jeon at Bohyunsan Optical Astronomy Observatory.
The fifteenth century in Korea is considered the century of scientific achievement. At the center was Jang Yeongsil (1390-1450). His scientific talent is represented in the invention of the water clock, Jagyeokru and Okru, the advancement of bronze-type printing technology and the development of astronomical instruments.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

Alternate Designations
 2002 DW = 1991 LG7 = 2000 WN47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Dec-12 14:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin