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JPL Small-Body Database Browser
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379545 (2011 AC15)
Classification: Main-belt Asteroid          SPK-ID: 2379545
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363770081090857 1.1619e-07  
a 2.706298396347273 6.0598e-08 au
q 2.337221518003015 3.4257e-07 au
i 8.249278128710696 6.8684e-06 deg
node 45.20136649638064 6.5131e-05 deg
peri 143.644699954183 8.1438e-05 deg
M 286.7867040574914 5.9644e-05 deg
tp 2458931.211582081703
(2020-Mar-22.71158208)
0.0002787 TDB
period 1626.155031224151
4.45
5.4618e-05
1.495e-07
d
yr
n .221381106405947 7.4356e-09 deg/d
Q 3.075375274691531 6.8862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      6163 days (16.87 yr)  
   first obs. used      2002-02-22  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:16:42  

Additional Information
 Earth MOID = 1.34305 au 
 Jupiter MOID = 1.89333 au 
 T_jup = 3.337 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457029.5 (2015-Jan-07.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137524862977096 1.1587e-07  
q 2.334182890060282 3.4212e-07 au
tp 2457304.777837288877
(2015-Oct-09.27783729)
0.00023339 TDB
node 45.25471928592135 6.516e-05 deg
peri 143.5502730614246 8.1311e-05 deg
i 8.248407676371444 6.8676e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      6163 days (16.87 yr)  
   first obs. used      2002-02-22  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:16:42  

Additional Information
 Jupiter MOID = 1.89333 au 
 T_jup = 3.337 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.342600779968725E-14 -3.928467644364793E-14 -1.506488910017127E-11 8.39238890596296E-14 -2.432429655106433E-12 -4.120617042743195E-14
q -3.928467644364793E-14 1.170427766943736E-13 5.01900830916574E-11 -2.93326813056308E-13 8.45428233199186E-12 1.333899300434018E-13
tp -1.506488910017127E-11 5.01900830916574E-11 5.446878553998907E-8 -3.850969659865102E-10 1.135794806956239E-8 1.157123244047645E-10
node 8.39238890596296E-14 -2.93326813056308E-13 -3.850969659865102E-10 4.245779880454377E-9 -4.28036694935656E-9 7.127489739402979E-11
peri -2.432429655106433E-12 8.45428233199186E-12 1.135794806956239E-8 -4.28036694935656E-9 6.611455707839901E-9 -4.798761757719669E-11
i -4.120617042743195E-14 1.333899300434018E-13 1.157123244047645E-10 7.127489739402979E-11 -4.798761757719669E-11 4.716414326005372E-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 16.5   n/a MPO418931  

379545 (2011 AC15)          Discovered 2009-Sep-21 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2011 AC15 = 2009 VG66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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