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 ]  
37945 (1998 HP19)
Classification: Main-belt Asteroid          SPK-ID: 2037945
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1678437687058521 3.9892e-08  
a 2.58086191013896 1.34e-08 au
q 2.147680320631853 1.0586e-07 au
i 11.0048837203031 6.6752e-06 deg
node 2.470680736579739 3.0994e-05 deg
peri 306.018565534658 3.9385e-05 deg
M 23.43728977029672 2.5661e-05 deg
tp 2458901.906004248312
(2020-Feb-22.40600425)
0.00010773 TDB
period 1514.41735876777
4.15
1.1794e-05
3.229e-08
d
yr
n .2377151832787494 1.8513e-09 deg/d
Q 3.014043499646067 1.5649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      8651 days (23.69 yr)  
   first obs. used      1995-10-22  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57656  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:41:17  

Additional Information
 Earth MOID = 1.15491 au 
 Jupiter MOID = 2.35113 au 
 T_jup = 3.379 
[ 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 15.0   n/a MPO474235  
diameter diameter 3.228 km 1.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.186   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37945 (1998 HP19)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HP19 = 1998 HL28 = 1999 RS16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-26 18:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin