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245321 (2005 EU81)
Classification: Main-belt Asteroid          SPK-ID: 2245321
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06475474408890472 4.259e-08  
a 2.707849789338282 2.2804e-08 au
q 2.532503669198487 1.2505e-07 au
i .8736534753723443 4.7098e-06 deg
node 283.5534123025938 0.0003509 deg
peri 158.8700602482115 0.00035437 deg
M 228.9584182887476 5.1129e-05 deg
tp 2459592.936635210600
(2022-Jan-13.43663521)
0.00023439 TDB
period 1627.553528358413
4.46
2.056e-05
5.629e-08
d
yr
n .2211908817297727 2.7941e-09 deg/d
Q 2.883195909478077 2.4281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      7587 days (20.77 yr)  
   first obs. used      2000-01-03  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59173  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:44:56  

Additional Information
 Earth MOID = 1.54843 au 
 Jupiter MOID = 2.2519 au 
 T_jup = 3.361 
[ 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 16.7   n/a MPO437143  

245321 (2005 EU81)          Discovered 2005-Mar-04 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ 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
1979-Jul-09 20:28 00:05 Iris 0.0441683010555266 0.0441628269394097 0.0441737765027128 2.67252323919627 2.67252319049494 2444064.352855213 5.2858950028438 486.276755913945 86.6703431032357 57.3083856760543 64499.7950135967 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 00:44:56 2020-Nov-12 00:44
2200-Sep-25 15:26 00:09 Hebe 0.0375324340546688 0.0375057850099078 0.0375591993594633 5.65426520181572 5.654265172522 2524861.142808373 8.62125233489757 3554.77591178248 57.9665897640371 -68.0245804439577 89796.7823550807 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 00:44:56 2020-Nov-12 00:44

Alternate Designations
 2005 EU81 = 2000 AY206 = 2001 HA24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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