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 ]  
49312 (1998 VA18)
Classification: Main-belt Asteroid          SPK-ID: 2049312
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1582149750555177 8.3315e-08  
a 2.563825601139973 1.5809e-08 au
q 2.158189997608915 2.1825e-07 au
i 12.71514172046108 5.0711e-06 deg
node 235.8869131244624 3.2323e-05 deg
peri 265.80765549571 3.6126e-05 deg
M 273.3922141378521 1.5759e-05 deg
tp 2458961.232757715167
(2020-Apr-21.73275772)
6.6228e-05 TDB
period 1499.447093407538
4.11
1.3869e-05
3.797e-08
d
yr
n .2400884976754259 2.2207e-09 deg/d
Q 2.969461204671032 1.8311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      683  
   data-arc span      7685 days (21.04 yr)  
   first obs. used      1998-11-10  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56247  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:41:24  

Additional Information
 Earth MOID = 1.21514 au 
 Jupiter MOID = 2.2356 au 
 T_jup = 3.382 
[ 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 14.9   n/a MPO412509  
diameter diameter 4.203 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.132   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49312 (1998 VA18)          Discovered 1998-Nov-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 VA18 = 2000 GN156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-20 04:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin