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146775 (2001 XD226)
Classification: Main-belt Asteroid          SPK-ID: 2146775
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06468133227518581 4.9117e-08  
a 2.778026124489196 1.6716e-08 au
q 2.598339693661964 1.4101e-07 au
i 3.336088677388775 4.3124e-06 deg
node 261.2396835308224 0.00010105 deg
peri 146.3638936490703 0.00010967 deg
M 17.1344294842153 4.1942e-05 deg
tp 2458920.004785331764
(2020-Mar-11.50478533)
0.00019694 TDB
period 1691.23093986063
4.63
1.5264e-05
4.179e-08
d
yr
n .2128627093527905 1.9212e-09 deg/d
Q 2.957712555316429 1.7797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      8494 days (23.26 yr)  
   first obs. used      1996-10-04  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 19:26:41  

Additional Information
 Earth MOID = 1.60897 au 
 Jupiter MOID = 2.29822 au 
 T_jup = 3.329 
[ show covariance matrix ]

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 16.1   n/a MPO502888  
diameter diameter 3.982 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

146775 (2001 XD226)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1966-Apr-26 05:51 00:03 Hygie 0.0417229847331939 0.0417135440599149 0.0417324275053231 2.73932505536552 2.73932471731352 2439241.744050773 3.43541964677572 664.271934855669 66.2744652083782 -45.3153850820929 67029.2394487975 T 15 CATAB v2.0f-lin.ifort 2020-Jan-29 19:26:56 2020-Jan-29 19:27
1994-Jan-27 07:44 00:02 Hygie 0.0326973888968019 0.0326935253272531 0.0327012528270148 2.60525346667315 2.60525301310828 2449379.822184656 2.20587788905454 263.938925283359 65.9923865486841 45.2213517857108 53980.770674845 T 15 CATAB v2.0f-lin.ifort 2020-Jan-29 19:26:56 2020-Jan-29 19:27
2021-Nov-21 11:41 00:02 Hygie 0.0350621398088828 0.0350598011615208 0.0350644785393923 2.4122802499711 2.41227979316038 2459539.986679469 1.6688163344576 154.808533897814 65.7541258259563 47.052415134782 62480.6682391302 T 15 CATAB v2.0f-lin.ifort 2020-Jan-29 19:26:56 2020-Jan-29 19:27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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