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
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
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 ]  
6385 Martindavid (1989 EC2)
Classification: Main-belt Asteroid          SPK-ID: 2006385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1192983849147215 4.7105e-08  
a 3.147338038351891 1.943e-08 au
q 2.771865693595843 1.4845e-07 au
i 5.668510324545744 5.9695e-06 deg
node 22.92556906872577 4.2501e-05 deg
peri 200.6116047165125 4.7316e-05 deg
M 96.43782308223818 2.1235e-05 deg
tp 2458054.165771569555
(2017-Oct-27.66577157)
0.00011917 TDB
period 2039.45211483299
5.58
1.8886e-05
5.171e-08
d
yr
n .1765179958782608 1.6346e-09 deg/d
Q 3.522810383107939 2.1748e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1850  
   data-arc span      23598 days (64.61 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48723  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:54:02  

Additional Information
 Earth MOID = 1.7643 au 
 Jupiter MOID = 1.46272 au 
 T_jup = 3.190 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO416782  
diameter diameter 13.471 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.476 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.089   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6385 Martindavid           Discovered 1989 Mar. 5 by A. Mrkos at Klet.
Martin Alois David (1757-1836), the fourth director of the Klementinum observatory in Prague, organized extensive longitude and latitude measurements in Bohemia. The name was suggested by J. Ticha and M. Šolc.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1989 EC2 = 1987 WS2 = 1991 RV12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin