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43709 (2284 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2043709
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1527232368064309 3.2523e-08  
a 2.202581151058718 7.1759e-09 au
q 1.866195828340196 7.3717e-08 au
i 3.013838642243913 4.1535e-06 deg
node 186.1995391563693 6.7937e-05 deg
peri 78.91058572579789 6.9456e-05 deg
M 305.7162671136477 1.562e-05 deg
tp 2459576.537721678491
(2021-Dec-28.03772168)
5.2241e-05 TDB
period 1193.977944367786
3.27
5.8349e-06
1.598e-08
d
yr
n .301513107254775 1.4735e-09 deg/d
Q 2.53896647377724 8.2718e-09 au
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      17443 days (47.76 yr)  
   first obs. used      1973-09-29  
   last obs. used      2021-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:06:17  

Additional Information
 Earth MOID = .853331 au 
 Jupiter MOID = 2.52963 au 
 T_jup = 3.647 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457071.5 (2015-Feb-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1527347009936011 3.2482e-08  
q 1.86598045556935 7.3613e-08 au
tp 2457188.565544960540
(2015-Jun-15.06554496)
4.7531e-05 TDB
node 186.230226217724 6.7929e-05 deg
peri 78.9110639203376 6.9453e-05 deg
i 3.013714343369774 4.1543e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      17443 days (47.76 yr)  
   first obs. used      1973-09-29  
   last obs. used      2021-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:06:17  

Additional Information
 Jupiter MOID = 2.52963 au 
 T_jup = 3.647 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.055070230485139E-15 -2.383749576719929E-15 -2.371456448495372E-13 4.353464008337753E-16 -5.966944718739018E-14 -4.836788933337266E-16
q -2.383749576719929E-15 5.418821558334929E-15 6.102861750759385E-13 -5.76189844903766E-16 1.546340752340922E-13 1.154607704889754E-15
tp -2.371456448495372E-13 6.102861750759385E-13 2.259227916747733E-9 -8.58599183821796E-12 6.970890656023452E-10 1.73572437808301E-15
node 4.353464008337753E-16 -5.76189844903766E-16 -8.58599183821796E-12 4.614387931675744E-9 -4.610121145143139E-9 2.920187958968503E-12
peri -5.966944718739018E-14 1.546340752340922E-13 6.970890656023452E-10 -4.610121145143139E-9 4.823715421460922E-9 -2.903559496011294E-12
i -4.836788933337266E-16 1.154607704889754E-15 1.73572437808301E-15 2.920187958968503E-12 -2.903559496011294E-12 1.72585823467799E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.97   n/a MPCxxxxx  

43709 (2284 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2284 T-2 = 1996 VW38 = 1999 RD164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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