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74938 (1999 TC174)
Classification: Main-belt Asteroid          SPK-ID: 2074938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1056803480952648 3.487e-08  
a 2.273254209073973 1.0207e-08 au
q 2.03301591295001 7.9898e-08 au
i 7.922324758384407 5.8548e-06 deg
node 358.3121401367388 2.7793e-05 deg
peri 283.1706185649707 3.9866e-05 deg
M 100.7568929194163 2.79e-05 deg
tp 2458650.117264878822
(2019-Jun-15.61726488)
9.7223e-05 TDB
period 1251.902286670422
3.43
8.4315e-06
2.308e-08
d
yr
n .2875623791354047 1.9367e-09 deg/d
Q 2.513492505197936 1.1285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      708  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:41:45  

Additional Information
 Earth MOID = 1.03458 au 
 Jupiter MOID = 2.62824 au 
 T_jup = 3.591 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456935.5 (2014-Oct-05.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .105371224135515 3.483e-08  
q 2.034665351215793 7.9783e-08 au
tp 2457398.397277298217
(2016-Jan-10.89727730)
9.8928e-05 TDB
node 358.3618411295573 2.779e-05 deg
peri 283.2008068877118 3.9931e-05 deg
i 7.922173501427633 5.8541e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      708  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:41:45  

Additional Information
 Jupiter MOID = 2.62824 au 
 T_jup = 3.591 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.213138856426681E-15 -2.760352863702079E-15 6.28111056069642E-13 -3.310405659689162E-15 1.827907131082757E-13 -1.223415842967871E-15
q -2.760352863702079E-15 6.365379823926439E-15 -1.597006124015145E-12 6.288253424822587E-15 -4.730442057811235E-13 2.793934343093578E-15
tp 6.28111056069642E-13 -1.597006124015145E-12 9.786733659562369E-9 2.032298866377573E-11 2.844603502900888E-9 -4.432544229969336E-12
node -3.310405659689162E-15 6.288253424822587E-15 2.032298866377573E-11 7.722696780771209E-10 -7.58018170267181E-10 4.081581615520424E-12
peri 1.827907131082757E-13 -4.730442057811235E-13 2.844603502900888E-9 -7.58018170267181E-10 1.59444546829355E-9 -5.370249939400294E-12
i -1.223415842967871E-15 2.793934343093578E-15 -4.432544229969336E-12 4.081581615520424E-12 -5.370249939400294E-12 3.427038229899127E-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 15.9   n/a MPO436307  
rotation period rot_per 7.13708 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

74938 (1999 TC174)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TC174 = 2001 DY24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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