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305318 (2008 AU54)
Classification: Main-belt Asteroid          SPK-ID: 2305318
[ 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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01436092450548165 7.4916e-08  
a 3.09070144226627 3.8299e-08 au
q 3.046316112184901 2.2754e-07 au
i 8.999367246123597 6.9203e-06 deg
node 305.3289724606032 4.1991e-05 deg
peri 240.8684724222331 0.00021802 deg
M 36.06148807697711 0.00021486 deg
tp 2458801.695984465398
(2019-Nov-14.19598447)		 0.0011848 TDB
period 1984.650368273324
5.43		 3.689e-05
1.01e-07		 d
yr
n .1813921513607485 3.3717e-09 deg/d
Q 3.135086772347639 3.8849e-08 au
   Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      7206 days (19.73 yr)  
   first obs. used      2000-09-23  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:12:30  

Additional Information
 Earth MOID = 2.06218 au 
 Jupiter MOID = 1.90961 au 
 T_jup = 3.206 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457186.5 (2015-Jun-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01496955960649905 7.5862e-08  
q 3.04518340045875 2.3057e-07 au
tp 2456787.815511439529
(2014-May-10.31551144)		 0.0011084 TDB
node 305.3534105160572 4.1991e-05 deg
peri 235.8017861476921 0.0002041 deg
i 8.998862613364272 6.9198e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      7206 days (19.73 yr)  
   first obs. used      2000-09-23  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:12:30  

Additional Information
 Jupiter MOID = 1.90961 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.755026741051145E-15 -1.726208623212847E-14 -1.688625991371457E-11 8.504418577758732E-15 -2.857587416227486E-12 4.890562724734492E-15
q -1.726208623212847E-14 5.316098186990209E-14 4.888329629069045E-11 -1.896265560936855E-14 8.293575699038103E-12 -1.294021760606704E-14
tp -1.688625991371457E-11 4.888329629069045E-11 1.228566966026059E-6 2.654315066753676E-10 2.214271718285861E-7 7.769162066728795E-11
node 8.504418577758732E-15 -1.896265560936855E-14 2.654315066753676E-10 1.763224483160911E-9 -1.692434638708465E-9 7.570819463816743E-11
peri -2.857587416227486E-12 8.293575699038103E-12 2.214271718285861E-7 -1.692434638708465E-9 4.16561957277904E-8 -6.048989672766735E-11
i 4.890562724734492E-15 -1.294021760606704E-14 7.769162066728795E-11 7.570819463816743E-11 -6.048989672766735E-11 4.78831835744673E-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 15.6   n/a MPO471205  

305318 (2008 AU54)          Discovered 2008-Jan-11 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ 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
1952-Mar-07 19:11 00:04 Jupiter 1.94039986411495 1.94039892701779 1.94040080121312 3.02913972738794 2.88143164876356 2434079.299284513 3.82833126255677 174.162641356683 34.6566732199165 82.8074105861308 1988489.61200617 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
1962-Jan-30 11:15 00:03 Jupiter 1.94169093615425 1.94169017837505 1.94169169393357 4.23376949822332 4.12944857396643 2437694.968813397 2.8917071444506 123.902302733135 31.0120408410959 83.7586510768577 1971223.87313634 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
2012-Jun-29 21:59 < 00:01 Jupiter 1.9964053074073 1.99640462292867 1.99640599188604 3.46267171666057 3.33789570951166 2456108.415826509 0.316681397811634 63.373383584919 22.9681869705934 -69.8874228665374 2559754.78289598 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
2022-Apr-26 19:58 < 00:01 Jupiter 1.90444705613437 1.90444627897571 1.90444783329292 3.58626119866905 3.46002148977266 2459696.331738958 0.501422050259015 149.547702588669 32.4515359305263 87.828337843619 1897929.7541333 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
2082-Aug-15 22:35 00:04 Jupiter 1.93932461914611 1.93932382182265 1.93932541646947 3.01086113988288 2.86212536616907 2481722.440800137 4.09055153378742 186.459271113264 31.7768260964543 86.8434760679073 1944125.21379808 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
2092-Jul-09 16:00 00:04 Jupiter 1.95874052539546 1.9587393162657 1.95874173452599 4.2762920462021 4.17394408471899 2485338.166959549 4.1452871235015 136.875522696722 43.4658938208137 75.966158885811 1443617.80417228 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
2142-Dec-11 09:32 00:07 Jupiter 1.98539335186382 1.98539239956172 1.98539430417145 3.44138445127734 3.31509771114336 2503753.897022935 7.43977484752579 291.449773853562 31.2409389468917 89.6978145520969 2130361.21646746 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12
2152-Oct-06 15:00 00:08 Jupiter 1.91487545943851 1.91487466937705 1.9148762495041 3.5926900241821 3.46738305644774 2507341.124882408 7.86306004719014 569.479369372428 31.6857873403028 88.4342112300038 1847075.52088123 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:31 2020-Nov-11 19:12

Alternate Designations
 2008 AU54 = 2003 EJ7 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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