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376537 (2012 TW9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2376537
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1469922079963691 8.9917e-08  
a 3.942406531390343 1.0967e-07 au
q 3.36290349052197 3.147e-07 au
i 7.177146111172221 9.2257e-06 deg
node 342.0215394808941 4.1351e-05 deg
peri 183.3254946070737 4.5143e-05 deg
M 184.9448013673162 1.8669e-05 deg
tp 2460390.814483931182
(2024-Mar-21.31448393)
0.00017722 TDB
period 2859.173667075414
7.83
0.0001193
3.266e-07
d
yr
n .1259105048936171 5.2536e-09 deg/d
Q 4.521909572258717 1.2579e-07 au
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      9684 days (26.51 yr)  
   first obs. used      1993-03-21  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62247  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 12:28:48  

Additional Information
 Earth MOID = 2.37043 au 
 Jupiter MOID = .475958 au 
 T_jup = 3.028 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457292.5 (2015-Sep-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461778748001929 9.0453e-08  
q 3.373670504725398 3.1964e-07 au
tp 2457546.347035783650
(2016-Jun-06.84703578)
0.00014144 TDB
node 342.2187021848531 4.1156e-05 deg
peri 185.5976320511819 4.4966e-05 deg
i 7.193944257721573 9.2362e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      9684 days (26.51 yr)  
   first obs. used      1993-03-21  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62247  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 12:28:48  

Additional Information
 Jupiter MOID = .475958 au 
 T_jup = 3.028 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.181831802284107E-15 -2.796076202894194E-14 -2.566231793672721E-12 -7.91027969290471E-15 -3.633091939255327E-13 -1.548389955263769E-15
q -2.796076202894194E-14 1.02170812427836E-13 8.28876086109114E-12 2.207790678714936E-14 1.107819688110737E-12 9.544190737409779E-15
tp -2.566231793672721E-12 8.28876086109114E-12 2.000600685985807E-8 1.249719245208715E-11 2.585956666795157E-9 -3.24136617512357E-12
node -7.91027969290471E-15 2.207790678714936E-14 1.249719245208715E-11 1.69379878000153E-9 -1.678228094302034E-9 2.8358005018022E-12
peri -3.633091939255327E-13 1.107819688110737E-12 2.585956666795157E-9 -1.678228094302034E-9 2.021910344479118E-9 -3.334966662362504E-12
i -1.548389955263769E-15 9.544190737409779E-15 -3.24136617512357E-12 2.8358005018022E-12 -3.334966662362504E-12 8.530816564110222E-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 14.8   n/a MPO494942  

376537 (2012 TW9)          Discovered 1993-Mar-21 by UESAC, Comets at La Silla
Reference: Last Updated: 2013-10-21

[ show close-approach data ]
Alternate Designations
 2012 TW9 = 1993 FW65 = 1997 SO26 = 2010 FK81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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