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
JPL Small-Body Database Browser
Search: [ help ]  
181117 (2005 QH98)
Classification: Main-belt Asteroid          SPK-ID: 2181117
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2153817767724127 6.9234e-08  
a 3.097510545275039 2.6786e-08 au
q 2.430363220462416 2.1377e-07 au
i 16.49329729301188 7.5012e-06 deg
node 351.164723631624 1.8626e-05 deg
peri 11.96079894984144 2.3478e-05 deg
M 273.6578750467793 1.4535e-05 deg
tp 2459678.070892713281
(2022-Apr-08.57089271)
8.4131e-05 TDB
period 1991.21253351048
5.45
2.5829e-05
7.072e-08
d
yr
n .1807943621996619 2.3451e-09 deg/d
Q 3.764657870087661 3.2555e-08 au
  Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      7205 days (19.73 yr)  
   first obs. used      2000-09-03  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54147  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:17  

Additional Information
 Earth MOID = 1.42784 au 
 Jupiter MOID = 1.70383 au 
 T_jup = 3.125 
[ 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 15.16   n/a E2021B55  
diameter diameter 7.282 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181117 (2005 QH98)          Discovered 2005-Aug-27 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2005 QH98 = 2005 ST257 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-16 01:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin