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 ]  
(2009 XY21)
Classification: Asteroid          SPK-ID: 3486125
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4126267315932789 1.0773e-07  
a 5.293344085810381 2.2967e-07 au
q 3.109168816483831 6.4576e-07 au
i 3.720347141738729 1.4304e-05 deg
node 308.7213076499374 0.0002899 deg
peri 156.0797921903552 0.00029331 deg
M 312.0698007298815 3.6807e-05 deg
tp 2459592.743562839010
(2022-Jan-13.24356284)
0.00048633 TDB
period 4448.295351756768
12.18
0.0002895
7.926e-07
d
yr
n .08092987797175495 5.267e-09 deg/d
Q 7.477519355136931 3.2443e-07 au
  Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      4413 days (12.08 yr)  
   first obs. used      2008-09-23  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62563  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-02 18:36:27  

Additional Information
 Earth MOID = 2.12652 au 
 Jupiter MOID = .355965 au 
 T_jup = 2.817 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a E2018N10  
diameter diameter 3.943 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.065   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-01 13:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin