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 ]  
58878 (1998 HK125)
Classification: Main-belt Asteroid          SPK-ID: 2058878
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2863652792524156 3.3582e-08  
a 2.862366692857483 1.8316e-08 au
q 2.042684255534536 9.3304e-08 au
i 8.393749374552648 5.9622e-06 deg
node 142.7870034032576 3.0864e-05 deg
peri 136.950747980905 3.3211e-05 deg
M 89.92786967271027 1.2084e-05 deg
tp 2458158.646666243655
(2018-Feb-09.14666624)
5.7517e-05 TDB
period 1768.830961204847
4.84
1.6978e-05
4.648e-08
d
yr
n .2035242529646724 1.9535e-09 deg/d
Q 3.682049130180429 2.3562e-08 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      8012 days (21.94 yr)  
   first obs. used      1997-01-11  
   last obs. used      2018-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54841  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:36:37  

Additional Information
 Earth MOID = 1.03514 au 
 Jupiter MOID = 1.55211 au 
 T_jup = 3.224 
[ 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 15.2   n/a MPO449378  
diameter diameter 5.963 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.029   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58878 (1998 HK125)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HK125 = 1997 AO20 
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-19 08:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin