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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
71171 (1999 XG206)
Classification: Main-belt Asteroid          SPK-ID: 2071171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104056461199356 4.819e-08  
a 3.096722745486881 2.6493e-08 au
q 2.754827069917101 1.4875e-07 au
i 12.55176473957827 5.9576e-06 deg
node 62.02895403590009 2.6099e-05 deg
peri 27.25413710356587 3.9425e-05 deg
M 212.4828325872817 3.0485e-05 deg
tp 2459416.127718839565
(2021-Jul-20.62771884)
0.00017199 TDB
period 1990.452934611652
5.45
2.5543e-05
6.993e-08
d
yr
n .1808633571485265 2.321e-09 deg/d
Q 3.438618421056661 2.9418e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      7233 days (19.80 yr)  
   first obs. used      1998-09-21  
   last obs. used      2018-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58261  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:13:41  

Additional Information
 Earth MOID = 1.77706 au 
 Jupiter MOID = 1.86507 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456698.5 (2014-Feb-10.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1067630937407339 4.7784e-08  
q 2.769108639101189 1.4711e-07 au
tp 2457414.878652274499
(2016-Jan-27.37865227)
0.00017251 TDB
node 62.13084616900514 2.6168e-05 deg
peri 25.74680677099812 4.0427e-05 deg
i 12.53173771479012 5.9537e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      7233 days (19.80 yr)  
   first obs. used      1998-09-21  
   last obs. used      2018-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58261  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:13:41  

Additional Information
 Jupiter MOID = 1.86507 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.283266222028402E-15 -6.938899469086165E-15 -1.14502299611117E-12 1.307309443949124E-15 -3.030913250730235E-13 1.835603775720355E-15
q -6.938899469086165E-15 2.164004838276989E-14 4.490585891709348E-12 -1.464257506508209E-14 1.070082444185671E-12 -2.676952992341312E-15
tp -1.14502299611117E-12 4.490585891709348E-12 2.975989019906182E-8 -1.864580862795694E-11 5.34488446849903E-9 -1.917576009996956E-11
node 1.307309443949124E-15 -1.464257506508209E-14 -1.864580862795694E-11 6.847482582481232E-10 -6.714502826580957E-10 -5.501272464737728E-11
peri -3.030913250730235E-13 1.070082444185671E-12 5.34488446849903E-9 -6.714502826580957E-10 1.63432109195244E-9 5.011587411406695E-11
i 1.835603775720355E-15 -2.676952992341312E-15 -1.917576009996956E-11 -5.501272464737728E-11 5.011587411406695E-11 3.544613271470451E-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 13.9   n/a MPO439544  
diameter diameter 5.233 km 0.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71171 (1999 XG206)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ 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
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin