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 ]  
71048 (1999 XA87)
Classification: Main-belt Asteroid          SPK-ID: 2071048
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096118339956474 4.476e-08  
a 2.695013891491548 1.5883e-08 au
q 2.130107087052258 1.2644e-07 au
i 12.03263021382281 4.3239e-06 deg
node 277.8160632372887 2.3423e-05 deg
peri 113.5092969210409 2.6319e-05 deg
M 278.9891027912709 1.289e-05 deg
tp 2459364.147729518181
(2021-May-29.64772952)		 5.982e-05 TDB
period 1615.994725860644
4.42		 1.4285e-05
3.911e-08		 d
yr
n .2227730042919984 1.9693e-09 deg/d
Q 3.259920695930838 1.9212e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:58:01  

Additional Information
 Earth MOID = 1.16981 au 
 Jupiter MOID = 2.28805 au 
 T_jup = 3.307 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457264.5 (2015-Aug-30.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2121394154446982 4.4677e-08  
q 2.120138487589498 1.2617e-07 au
tp 2457751.223521390278
(2016-Dec-28.72352139)		 5.1316e-05 TDB
node 277.8536336019422 2.3457e-05 deg
peri 113.7680339796591 2.6265e-05 deg
i 12.03140980712094 4.3226e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:58:01  

Additional Information
 Jupiter MOID = 2.28805 au 
 T_jup = 3.307 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.995997027883592E-15 -5.614809633434025E-15 -8.390959735866233E-13 2.133834711774092E-15 -1.625969498727747E-13 -8.832402762599559E-15
q -5.614809633434025E-15 1.591858724031357E-14 2.529303449669235E-12 -3.728525412708069E-15 4.859867510014502E-13 2.585498545516164E-14
tp -8.390959735866233E-13 2.529303449669235E-12 2.633336482692724E-9 6.573717456725403E-13 6.306221287525921E-10 8.710042266125836E-12
node 2.133834711774092E-15 -3.728525412708069E-15 6.573717456725403E-13 5.502388820965908E-10 -5.377247777788029E-10 1.030663609443269E-11
peri -1.625969498727747E-13 4.859867510014502E-13 6.306221287525921E-10 -5.377247777788029E-10 6.898312580942948E-10 -8.217501066239498E-12
i -8.832402762599559E-15 2.585498545516164E-14 8.710042266125836E-12 1.030663609443269E-11 -8.217501066239498E-12 1.868459269650699E-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 14.1   n/a MPO474590  
diameter diameter 5.509 km 0.472 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71048 (1999 XA87)          Discovered 1999-Dec-07 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 2021-Jan-18 20:39 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin