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 ]  
146773 (2001 XO221)
Classification: Main-belt Asteroid          SPK-ID: 2146773
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101697890411226 4.2997e-08  
a 2.76372624609575 1.7315e-08 au
q 2.482661117193675 1.1916e-07 au
i 3.461333711617992 4.0341e-06 deg
node 284.0203375171783 8.1493e-05 deg
peri 22.1968472196044 8.4757e-05 deg
M 109.1881668858104 2.3104e-05 deg
tp 2458491.504391560508
(2019-Jan-08.00439156)
0.00010699 TDB
period 1678.189352055421
4.59
1.5771e-05
4.318e-08
d
yr
n .2145169134573983 2.0159e-09 deg/d
Q 3.044791374997824 1.9076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      7412 days (20.29 yr)  
   first obs. used      2000-07-07  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:25:02  

Additional Information
 Earth MOID = 1.46803 au 
 Jupiter MOID = 2.15711 au 
 T_jup = 3.330 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO502888  
diameter diameter 4.407 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146773 (2001 XO221)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-05 13:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin