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74822 (1999 TA15)
Classification: Main-belt Asteroid          SPK-ID: 2074822
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1437502229954376 6.7244e-08  
a 2.309125677305229 6.1041e-09 au
q 1.977188346268111 1.5598e-07 au
i 6.605274290356296 5.9155e-06 deg
node 173.2968466556866 3.4482e-05 deg
peri 197.4386205383662 3.6386e-05 deg
M 78.90052991109842 1.0518e-05 deg
tp 2459115.602934584410
(2020-Sep-23.10293458)
3.7515e-05 TDB
period 1281.651006191632
3.51
5.082e-06
1.391e-08
d
yr
n .2808876974003428 1.1138e-09 deg/d
Q 2.641063008342346 6.9816e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      10862 days (29.74 yr)  
   first obs. used      1991-05-08  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:56:00  

Additional Information
 Earth MOID = .976675 au 
 Jupiter MOID = 2.82313 au 
 T_jup = 3.563 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457524.5 (2016-May-16.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1447957151830843 6.7337e-08  
q 1.97422753384707 1.5638e-07 au
tp 2457834.555534520966
(2017-Mar-22.05553452)
3.7879e-05 TDB
node 173.3750812779488 3.4484e-05 deg
peri 197.5048365963303 3.6351e-05 deg
i 6.605758283681426 5.9191e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      10862 days (29.74 yr)  
   first obs. used      1991-05-08  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:56:00  

Additional Information
 Jupiter MOID = 2.82313 au 
 T_jup = 3.563 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.534275046133247E-15 -1.052442930273355E-14 9.456603536368296E-13 4.549973936993101E-14 2.131733556381989E-13 -6.730878380388798E-15
q -1.052442930273355E-14 2.445511843166799E-14 -2.229012623223968E-12 -1.056547872386139E-13 -5.075405973445713E-13 1.580063905288182E-14
tp 9.456603536368296E-13 -2.229012623223968E-12 1.434849117533402E-9 8.920366229423635E-12 4.493761329307295E-10 -1.831695506082124E-12
node 4.549973936993101E-14 -1.056547872386139E-13 8.920366229423635E-12 1.189174952622333E-9 -1.178442179874961E-9 1.335245678656084E-10
peri 2.131733556381989E-13 -5.075405973445713E-13 4.493761329307295E-10 -1.178442179874961E-9 1.32138434458381E-9 -1.332266640264001E-10
i -6.730878380388798E-15 1.580063905288182E-14 -1.831695506082124E-12 1.335245678656084E-10 -1.332266640264001E-10 3.503557425062992E-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 15.62   n/a E2021B10  
rotation period rot_per 2.412 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

74822 (1999 TA15)          Discovered 1999-Oct-12 by Juels, C. W. at Fountain Hills
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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