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 ]  
101507 (1998 XG18)
Classification: Main-belt Asteroid          SPK-ID: 2101507
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06883977882294247 5.3079e-08  
a 2.794433651886594 2.6665e-08 au
q 2.602065457355334 1.4386e-07 au
i 3.488238818510733 5.6355e-06 deg
node 237.5771897681255 7.7511e-05 deg
peri 166.3334503720732 8.6418e-05 deg
M 276.3980435379879 4.3273e-05 deg
tp 2459596.735215575177
(2022-Jan-17.23521557)
0.00020863 TDB
period 1706.236117475074
4.67
2.4422e-05
6.686e-08
d
yr
n .2109907276682995 3.02e-09 deg/d
Q 2.986801846417855 2.8501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      396  
   data-arc span      7484 days (20.49 yr)  
   first obs. used      1998-12-08  
   last obs. used      2019-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:06  

Additional Information
 Earth MOID = 1.61007 au 
 Jupiter MOID = 2.29983 au 
 T_jup = 3.322 
[ 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 15.8   n/a MPO432542  
diameter diameter 4.386 km 0.955 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101507 (1998 XG18)          Discovered 1998-Dec-08 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 XG18 = 2002 RR115 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-17 19:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin