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 ]  
56018 (1998 VH4)
Classification: Main-belt Asteroid          SPK-ID: 2056018
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1584587322796725 4.2852e-08  
a 2.326384946431634 1.1728e-08 au
q 1.957748937025563 9.8728e-08 au
i 3.768229556513869 6.3964e-06 deg
node 38.65370165186191 6.9294e-05 deg
peri 95.48834030283854 7.3166e-05 deg
M 206.6164780925248 2.6e-05 deg
tp 2459152.700760109362
(2020-Oct-30.20076011)
9.6472e-05 TDB
period 1296.047131837845
3.55
9.8007e-06
2.683e-08
d
yr
n .2777676761565809 2.1005e-09 deg/d
Q 2.695020955837704 1.3587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7657 days (20.96 yr)  
   first obs. used      1998-11-10  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62346  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:11:12  

Additional Information
 Earth MOID = .976533 au 
 Jupiter MOID = 2.34502 au 
 T_jup = 3.554 
[ 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 16.0   n/a MPO400542  
diameter diameter 1.371 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.341   0.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56018 (1998 VH4)          Discovered 1998-Nov-11 by ODAS at Caussols
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 VH4 = 1998 XM9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-22 07:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin