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 ]  
103116 (1999 XD181)
Classification: Main-belt Asteroid          SPK-ID: 2103116
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2224337655466636 4.9331e-08  
a 2.584274716071052 1.464e-08 au
q 2.009444759768332 1.2969e-07 au
i 13.58900381459361 5.4276e-06 deg
node 31.49811084466182 2.0965e-05 deg
peri 298.16448629965 2.3283e-05 deg
M 92.34077454339401 1.313e-05 deg
tp 2458811.277930924463
(2019-Nov-23.77793092)
5.3324e-05 TDB
period 1517.422239092723
4.15
1.2894e-05
3.53e-08
d
yr
n .2372444470138032 2.0159e-09 deg/d
Q 3.15910467237377 1.7896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46529  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:11  

Additional Information
 Earth MOID = 1.03842 au 
 Jupiter MOID = 2.36508 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456256.5 (2012-Nov-25.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2228229468099568 4.9269e-08  
q 2.008435168494298 1.2977e-07 au
tp 2455779.994011166750
(2011-Aug-06.49401117)
4.3778e-05 TDB
node 31.5587896792799 2.0936e-05 deg
peri 298.561606057702 2.325e-05 deg
i 13.60019435088913 5.4314e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46529  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:11  

Additional Information
 Jupiter MOID = 2.36508 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.427476333990269E-15 -6.369632952334233E-15 3.089980813018078E-13 8.305297983028918E-16 4.301897258972873E-14 -5.73980083625851E-15
q -6.369632952334233E-15 1.6841371188312E-14 -7.533399083889267E-13 -7.946576786596298E-16 -9.568866918579175E-14 1.484040756965899E-14
tp 3.089980813018078E-13 -7.533399083889267E-13 1.916534416965179E-9 8.109063366640826E-12 4.640104127210804E-10 -3.093143072896806E-12
node 8.305297983028918E-16 -7.946576786596298E-16 8.109063366640826E-12 4.383139302349878E-10 -4.239894787132373E-10 -1.508655999623195E-11
peri 4.301897258972873E-14 -9.568866918579175E-14 4.640104127210804E-10 -4.239894787132373E-10 5.405610811420996E-10 1.421722059591164E-11
i -5.73980083625851E-15 1.484040756965899E-14 -3.093143072896806E-12 -1.508655999623195E-11 1.421722059591164E-11 2.950054917933496E-11

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 14.88   n/a E2021B55  
diameter diameter 3.953 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103116 (1999 XD181)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XD181 = 2002 GS21 
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-23 06:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin