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100157 (1993 TU26)
Classification: Main-belt Asteroid          SPK-ID: 2100157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1599037445806949 2.958e-08  
a 2.617566428198273 1.2988e-08 au
q 2.199007754640655 7.6411e-08 au
i 3.397328870467018 3.803e-06 deg
node 102.1150073032676 8.2536e-05 deg
peri 331.1612269302278 8.4376e-05 deg
M 111.1285848354265 1.7011e-05 deg
tp 2458723.005605164826
(2019-Aug-27.50560516)
7.2235e-05 TDB
period 1546.838577988114
4.24
1.1513e-05
3.152e-08
d
yr
n .2327327525463141 1.7322e-09 deg/d
Q 3.036125101755892 1.5065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      10934 days (29.94 yr)  
   first obs. used      1991-04-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54815  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:52  

Additional Information
 Earth MOID = 1.21417 au 
 Jupiter MOID = 2.22886 au 
 T_jup = 3.386 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577693959050769 2.9533e-08  
q 2.205232899861442 7.6119e-08 au
tp 2457176.032805124537
(2015-Jun-02.53280512)
7.2168e-05 TDB
node 102.1931439815719 8.2524e-05 deg
peri 331.3402709475212 8.4428e-05 deg
i 3.397159484143532 3.8037e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      10934 days (29.94 yr)  
   first obs. used      1991-04-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54815  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:52  

Additional Information
 Jupiter MOID = 2.22886 au 
 T_jup = 3.386 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.72190640738567E-16 -2.225413760740896E-15 -6.734676302843178E-15 3.989932849092107E-15 -5.153046616712602E-15 -1.031015572670224E-16
q -2.225413760740896E-15 5.794114717619875E-15 5.301119815710896E-14 -1.157624253279813E-14 2.13802759258627E-14 4.001068921701829E-16
tp -6.734676302843178E-15 5.301119815710896E-14 5.208179621144757E-9 3.683457049207751E-12 1.31991168525913E-9 2.117190571767222E-12
node 3.989932849092107E-15 -1.157624253279813E-14 3.683457049207751E-12 6.810253356316728E-9 -6.796743928519741E-9 9.647765602387299E-11
peri -5.153046616712602E-15 2.13802759258627E-14 1.31991168525913E-9 -6.796743928519741E-9 7.128144485929423E-9 -9.576205465329391E-11
i -1.031015572670224E-16 4.001068921701829E-16 2.117190571767222E-12 9.647765602387299E-11 -9.576205465329391E-11 1.446850965553078E-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 16.09   n/a E2021B55  

100157 (1993 TU26)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1993 TU26 = 2002 YD28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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