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 ]  
13909 (1978 VD8)
Classification: Main-belt Asteroid          SPK-ID: 2013909
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .053820380868858 3.4924e-08  
a 2.257462788818595 8.4423e-09 au
q 2.135965281727104 7.9379e-08 au
i 3.263952924560737 4.17e-06 deg
node 58.10538586369108 7.3318e-05 deg
peri 253.8459201374187 8.5064e-05 deg
M 80.84457879130426 4.287e-05 deg
tp 2458322.286801482676
(2018-Jul-22.78680148)		 0.00014769 TDB
period 1238.880243594138
3.39		 6.9496e-06
1.903e-08		 d
yr
n .290584987420251 1.6301e-09 deg/d
Q 2.378960295910086 8.8966e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      15006 days (41.08 yr)  
   first obs. used      1978-11-05  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51572  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:39:54  

Additional Information
 Earth MOID = 1.1235 au 
 Jupiter MOID = 2.73168 au 
 T_jup = 3.618 
[ 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 15.7   n/a MPO347635  

13909 (1978 VD8)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1978 VD8 = 1987 KJ4 = 1998 SG128 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 05:37 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin