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 ]  
49637 (1999 HO8)
Classification: Main-belt Asteroid          SPK-ID: 2049637
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375456968668142 6.1664e-08  
a 2.675443203439548 1.3618e-08 au
q 2.307447503594874 1.6767e-07 au
i 13.35699257349812 6.1841e-06 deg
node 345.3844471693061 1.6849e-05 deg
peri 159.7899634072473 2.445e-05 deg
M 249.3773697343649 1.6112e-05 deg
tp 2459091.671897168160
(2020-Aug-30.17189717)
7.2323e-05 TDB
period 1598.424143016126
4.38
1.2204e-05
3.341e-08
d
yr
n .2252218233645436 1.7195e-09 deg/d
Q 3.043438903284223 1.5491e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      15596 days (42.70 yr)  
   first obs. used      1977-03-26  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51734  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:22:29  

Additional Information
 Earth MOID = 1.32322 au 
 Jupiter MOID = 1.9646 au 
 T_jup = 3.327 
[ 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 13.8   n/a MPO365831  
diameter diameter 6.210 km 0.536 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.166   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49637 (1999 HO8)          Discovered 1999-Apr-16 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 HO8 = 1977 FF2 = 2001 QM81 
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-18 17:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin