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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2549458700702928 6.768e-08  
a 2.664345759277658 8.0975e-09 au
q 1.98508181151052 1.8113e-07 au
i 14.50166644832619 6.5036e-06 deg
node 17.73696819855572 1.2285e-05 deg
peri 355.9024827156974 1.4695e-05 deg
M 54.78132124440867 5.7325e-06 deg
tp 2458758.779043414054
(2019-Oct-02.27904341)
2.5345e-05 TDB
period 1588.489331659236
4.35
7.2416e-06
1.983e-08
d
yr
n .2266304172304177 1.0332e-09 deg/d
Q 3.343609707044795 1.0162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      16303 days (44.64 yr)  
   first obs. used      1975-05-20  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:32:51  

Additional Information
 Earth MOID = .986448 au 
 Jupiter MOID = 2.11948 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456978.5 (2014-Nov-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2570745079081208 6.8612e-08  
q 1.978248008885584 1.8431e-07 au
tp 2457166.213926643894
(2015-May-23.71392664)
2.5534e-05 TDB
node 17.82173980111374 1.2255e-05 deg
peri 355.0899693985515 1.4575e-05 deg
i 14.53381329660909 6.5143e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      16303 days (44.64 yr)  
   first obs. used      1975-05-20  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:32:51  

Additional Information
 Jupiter MOID = 2.11948 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.70765596385488E-15 -1.263985698253625E-14 -2.628580243364022E-13 9.490778204823232E-15 -1.968498265726332E-13 -2.276801255840853E-14
q -1.263985698253625E-14 3.397143682171784E-14 6.605766320194523E-13 -2.638976667123707E-14 5.178439505477679E-13 6.174692884854579E-14
tp -2.628580243364022E-13 6.605766320194523E-13 6.519870670074104E-10 -1.040969757600036E-12 2.013424303803465E-10 -7.219983043336777E-13
node 9.490778204823232E-15 -2.638976667123707E-14 -1.040969757600036E-12 1.50174846442513E-10 -1.451123747668867E-10 -1.402025408692238E-11
peri -1.968498265726332E-13 5.178439505477679E-13 2.013424303803465E-10 -1.451123747668867E-10 2.124286561597946E-10 1.369761661663177E-11
i -2.276801255840853E-14 6.174692884854579E-14 -7.219983043336777E-13 -1.402025408692238E-11 1.369761661663177E-11 4.243654217236806E-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

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