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48540 (1993 TW8)
Classification: Main-belt Asteroid          SPK-ID: 2048540
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .254945871807521 6.7306e-08  
a 2.664345759162595 8.0688e-09 au
q 1.985081806796216 1.801e-07 au
i 14.50166672606393 6.4314e-06 deg
node 17.73696758759399 1.2151e-05 deg
peri 355.9024832139979 1.4588e-05 deg
M 54.78132135463757 5.6986e-06 deg
tp 2458758.779042943331
(2019-Oct-02.27904294)
2.5206e-05 TDB
period 1588.489331556334
4.35
7.216e-06
1.976e-08
d
yr
n .2266304172450987 1.0295e-09 deg/d
Q 3.343609711528974 1.0126e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1487  
   data-arc span      16330 days (44.71 yr)  
   first obs. used      1975-05-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:08:52  

Additional Information
 Earth MOID = .986448 au 
 Jupiter MOID = 2.11948 au 
 T_jup = 3.293 
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Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2570564552308419 6.8239e-08  
q 1.978270866167896 1.8326e-07 au
tp 2457166.212130262055
(2015-May-23.71213026)
2.5459e-05 TDB
node 17.8204359854611 1.212e-05 deg
peri 355.0896289212722 1.4466e-05 deg
i 14.53397968152452 6.4418e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1487  
   data-arc span      16330 days (44.71 yr)  
   first obs. used      1975-05-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:08:52  

Additional Information
 Jupiter MOID = 2.11948 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.656500159186982E-15 -1.249919837479389E-14 -2.539172966597752E-13 1.094953202177918E-14 -1.958504676567054E-13 -2.347757613759529E-14
q -1.249919837479389E-14 3.358467291696109E-14 6.35586863818674E-13 -3.030878080033844E-14 5.149207251157264E-13 6.366326453306054E-14
tp -2.539172966597752E-13 6.35586863818674E-13 6.481655500528977E-10 -9.750676033512978E-13 2.00563720995956E-10 -7.595763486646238E-13
node 1.094953202177918E-14 -3.030878080033844E-14 -9.750676033512978E-13 1.468955491867733E-10 -1.419665021953693E-10 -1.258060541816825E-11
peri -1.958504676567054E-13 5.149207251157264E-13 2.00563720995956E-10 -1.419665021953693E-10 2.09262370157365E-10 1.231188672803614E-11
i -2.347757613759529E-14 6.366326453306054E-14 -7.595763486646238E-13 -1.258060541816825E-11 1.231188672803614E-11 4.149688197954853E-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 13.9   n/a MPO502479  
diameter diameter 6.017 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.147   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

48540 (1993 TW8)          Discovered 1993-Oct-11 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1993 TW8 = 1999 CG122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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