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471240 (2011 BT15)
Classification: Apollo [NEO, PHA]          SPK-ID: 2471240
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 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3024643767802425 1.4885e-08  
a 1.292908746716063 3.3298e-09 au
q .9018499084068647 2.1382e-08 au
i 1.661416538291699 2.6077e-06 deg
node 105.365848755355 7.6299e-05 deg
peri 308.8103821258392 7.6226e-05 deg
M 154.5524239559403 8.2566e-06 deg
tp 2458769.972066492999
(2019-Oct-13.47206649)
1.154e-05 TDB
period 536.9702650938621
1.47
2.0744e-06
5.679e-09
d
yr
n .6704281845794055 2.5899e-09 deg/d
Q 1.683967585025261 4.3369e-09 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   # delay obs. used      3  
   # Doppler obs. used      0  
   data-arc span      4650 days (12.73 yr)  
   first obs. used      2007-07-30  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .9699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-23 07:04:16  

Additional Information
 Earth MOID = .000590612 au 
 Jupiter MOID = 3.66779 au 
 T_jup = 4.974 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456963.5 (2014-Nov-02.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3029123215776671 1.4948e-08  
q .9024715432477398 2.1267e-08 au
tp 2457157.672400677106
(2015-May-15.17240068)
6.9045e-06 TDB
node 105.7566837428401 7.5832e-05 deg
peri 308.269449863412 7.5733e-05 deg
i 1.665061305102752 2.6163e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      212  
   # delay obs. used      3  
   # Doppler obs. used      0  
   data-arc span      4650 days (12.73 yr)  
   first obs. used      2007-07-30  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .9699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-23 07:04:16  

Additional Information
 Jupiter MOID = 3.66779 au 
 T_jup = 4.974 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.234417383732751E-16 -3.173393766596706E-16 -4.177824367406095E-14 -1.144461453790376E-13 6.602329397000075E-14 -7.130037719681947E-15
q -3.173393766596706E-16 4.522815114604989E-16 6.28348886994543E-14 1.473648727039293E-13 -7.622471259004014E-14 9.587265872010467E-15
tp -4.177824367406095E-14 6.28348886994543E-14 4.767262453409077E-11 4.140399717022584E-11 5.470502455963116E-12 3.303021891486318E-12
node -1.144461453790376E-13 1.473648727039293E-13 4.140399717022584E-11 5.750530505784978E-9 -5.719433920981933E-9 1.256878150229782E-10
peri 6.602329397000075E-14 -7.622471259004014E-14 5.470502455963116E-12 -5.719433920981933E-9 5.73555387186688E-9 -1.223378821761193E-10
i -7.130037719681947E-15 9.587265872010467E-15 3.303021891486318E-12 1.256878150229782E-10 -1.223378821761193E-10 6.845029078451946E-12

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 21.7   n/a MPO383348  
rotation period rot_per 0.109138 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 157-168.]

471240 (2011 BT15)          Discovered 2011-Jan-24 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2016-08-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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