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 ]  
103186 (1999 XH242)
Classification: Main-belt Asteroid          SPK-ID: 2103186
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08021341185432503 3.8064e-08  
a 2.760663104817782 1.7705e-08 au
q 2.539220898199994 1.0385e-07 au
i 9.849100536521865 5.5308e-06 deg
node 44.25042261735277 2.7643e-05 deg
peri 50.4747880970066 4.6816e-05 deg
M 177.0212074140285 3.9265e-05 deg
tp 2458176.662908191864
(2018-Feb-27.16290819)
0.00017985 TDB
period 1675.400125123231
4.59
1.6117e-05
4.413e-08
d
yr
n .2148740438786351 2.0671e-09 deg/d
Q 2.98210531143557 1.9125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      832  
   data-arc span      7464 days (20.44 yr)  
   first obs. used      1999-12-13  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:50:15  

Additional Information
 Earth MOID = 1.56809 au 
 Jupiter MOID = 2.2104 au 
 T_jup = 3.316 
[ 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 14.71   n/a E2021B55  
diameter diameter 6.924 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103186 (1999 XH242)          Discovered 1999-Dec-13 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XH242 = 2001 HP12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-28 19:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin