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 ]  
103121 (1999 XP188)
Classification: Main-belt Asteroid          SPK-ID: 2103121
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542510310961706 4.2139e-08  
a 2.6873499615376 1.8143e-08 au
q 2.272823459054171 1.1276e-07 au
i 11.84484647878987 5.2616e-06 deg
node 286.35269924 2.1126e-05 deg
peri 144.8811809975333 3.3984e-05 deg
M 283.3665573442411 2.7966e-05 deg
tp 2459543.031567281631
(2021-Nov-24.53156728)
0.00012762 TDB
period 1609.106415528107
4.41
1.6296e-05
4.462e-08
d
yr
n .2237266575572308 2.2657e-09 deg/d
Q 3.101876464021029 2.0942e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      8137 days (22.28 yr)  
   first obs. used      1998-08-25  
   last obs. used      2020-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:23  

Additional Information
 Earth MOID = 1.29817 au 
 Jupiter MOID = 2.17188 au 
 T_jup = 3.326 
[ 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 14.59   n/a E2021B55  
diameter diameter 4.331 km 0.665 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103121 (1999 XP188)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-02 09:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin