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175840 (1999 TJ185)
Classification: Main-belt Asteroid          SPK-ID: 2175840
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230811141377705 4.5093e-08  
a 2.28402553846908 1.0969e-08 au
q 2.002905130475185 1.023e-07 au
i 6.467292984860136 5.3341e-06 deg
node 312.8613156222576 4.8007e-05 deg
peri 327.2403092208297 5.3574e-05 deg
M 137.2188042108885 2.3857e-05 deg
tp 2458719.925204446690
(2019-Aug-24.42520445)
8.2736e-05 TDB
period 1260.810625731012
3.45
9.0822e-06
2.487e-08
d
yr
n .2855305885380476 2.0568e-09 deg/d
Q 2.565145946462976 1.2319e-08 au
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      8315 days (22.77 yr)  
   first obs. used      1998-04-01  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54274  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:07:03  

Additional Information
 Earth MOID = .988071 au 
 Jupiter MOID = 2.57208 au 
 T_jup = 3.585 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457291.5 (2015-Sep-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1228152029107828 4.5033e-08  
q 2.003374370567057 1.0215e-07 au
tp 2457459.854212947448
(2016-Mar-12.35421295)
8.1656e-05 TDB
node 312.9032233489069 4.8034e-05 deg
peri 327.429466664831 5.364e-05 deg
i 6.465407657618307 5.3326e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      8315 days (22.77 yr)  
   first obs. used      1998-04-01  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54274  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:07:03  

Additional Information
 Jupiter MOID = 2.57208 au 
 T_jup = 3.585 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.027995086243927E-15 -4.579622320967351E-15 -1.139853134603097E-13 -5.334697938510848E-15 -2.73530381494306E-14 -2.182588395410946E-15
q -4.579622320967351E-15 1.043377520088632E-14 3.382674508046202E-13 1.239770822964184E-14 7.496971807472418E-14 5.149887179176078E-15
tp -1.139853134603097E-13 3.382674508046202E-13 6.667657813321229E-9 2.346677764479556E-11 1.971755695793709E-9 8.473402153074125E-12
node -5.334697938510848E-15 1.239770822964184E-14 2.346677764479556E-11 2.307294236632756E-9 -2.285470607004757E-9 2.95001637648832E-12
peri -2.73530381494306E-14 7.496971807472418E-14 1.971755695793709E-9 -2.285470607004757E-9 2.87729464879263E-9 -5.314555988108093E-13
i -2.182588395410946E-15 5.149887179176078E-15 8.473402153074125E-12 2.95001637648832E-12 -5.314555988108093E-13 2.843715317515706E-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 16.61   n/a E2021B55  

175840 (1999 TJ185)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

Alternate Designations
 1999 TJ185 = 2002 QS40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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