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305695 (2009 BT146)
Classification: Main-belt Asteroid          SPK-ID: 2305695
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09774333594731548 5.8609e-08  
a 2.3490639239622 1.7617e-08 au
q 2.119458579680644 1.3752e-07 au
i 4.208316920484335 7.1454e-06 deg
node 186.7664840294539 7.1838e-05 deg
peri 297.7130941407969 8.0834e-05 deg
M 76.08497391208425 3.5482e-05 deg
tp 2458722.568945664986
(2019-Aug-27.06894566)
0.000129 TDB
period 1315.045197705113
3.60
1.4793e-05
4.05e-08
d
yr
n .2737548493604907 3.0795e-09 deg/d
Q 2.578669268243757 1.9339e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6596 days (18.06 yr)  
   first obs. used      2002-04-05  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:59  

Additional Information
 Earth MOID = 1.13859 au 
 Jupiter MOID = 2.4691 au 
 T_jup = 3.549 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457192.5 (2015-Jun-19.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09764042123617425 5.9068e-08  
q 2.119729911773172 1.3866e-07 au
tp 2457409.072891390457
(2016-Jan-21.57289139)
0.00012655 TDB
node 186.7822574488831 7.1859e-05 deg
peri 298.236294614991 8.0765e-05 deg
i 4.207090003957248 7.146e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6596 days (18.06 yr)  
   first obs. used      2002-04-05  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:59  

Additional Information
 Jupiter MOID = 2.4691 au 
 T_jup = 3.549 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.489019696344282E-15 -8.136748167850785E-15 3.272504478371242E-12 9.010305485426151E-15 1.00254736692766E-12 -6.235067774508956E-15
q -8.136748167850785E-15 1.922746601816486E-14 -7.560843021213833E-12 -2.123876301760938E-14 -2.326785330650721E-12 1.512074673846239E-14
tp 3.272504478371242E-12 -7.560843021213833E-12 1.601611026842883E-8 2.525294141241023E-11 4.682309070618915E-9 -4.026278452994854E-12
node 9.010305485426151E-15 -2.123876301760938E-14 2.525294141241023E-11 5.163672323860235E-9 -5.141960157625906E-9 -1.032143355735968E-10
peri 1.00254736692766E-12 -2.326785330650721E-12 4.682309070618915E-9 -5.141960157625906E-9 6.523034810417448E-9 1.016917968912951E-10
i -6.235067774508956E-15 1.512074673846239E-14 -4.026278452994854E-12 -1.032143355735968E-10 1.016917968912951E-10 5.10652135684766E-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 17.5   n/a MPO460268  

305695 (2009 BT146)          Discovered 2009-Jan-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 BT146 = 2002 GJ178 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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