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 ]  
46788 (1998 HP139)
Classification: Main-belt Asteroid          SPK-ID: 2046788
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07667092090963375 3.0528e-08  
a 2.196495354180051 7.0598e-09 au
q 2.028088032601334 6.6378e-08 au
i 3.628598414150484 4.3555e-06 deg
node 340.1805918976954 5.0353e-05 deg
peri 233.4927159829727 5.8424e-05 deg
M 158.7840301606059 2.9904e-05 deg
tp 2458076.057136040415
(2017-Nov-18.55713604)		 9.8466e-05 TDB
period 1189.03286958068
3.26		 5.7325e-06
1.569e-08		 d
yr
n .3027670716344086 1.4597e-09 deg/d
Q 2.364902675758767 7.601e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      7924 days (21.69 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:57:52  

Additional Information
 Earth MOID = 1.02447 au 
 Jupiter MOID = 2.60699 au 
 T_jup = 3.662 
[ 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 14.8   n/a MPO347848  
diameter diameter 2.336 km 0.541 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.468   0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46788 (1998 HP139)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HP139 = 1985 DG2 = 1999 UB17 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-16 10:55 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin