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102269 (1999 TH44)
Classification: Main-belt Asteroid          SPK-ID: 2102269
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08877154194952144 4.7018e-08  
a 2.416685138574931 9.9008e-09 au
q 2.202152272417142 1.0946e-07 au
i 2.388761481219624 3.7574e-06 deg
node 309.1317404063665 0.00012505 deg
peri 201.3737681317903 0.00012782 deg
M 111.2414977717237 2.6284e-05 deg
tp 2458776.473635056728
(2019-Oct-19.97363506)
9.9707e-05 TDB
period 1372.235132008259
3.76
8.4328e-06
2.309e-08
d
yr
n .2623457100046271 1.6122e-09 deg/d
Q 2.631218004732721 1.078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      7569 days (20.72 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55934  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:41:12  

Additional Information
 Earth MOID = 1.21306 au 
 Jupiter MOID = 2.36109 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457154.5 (2015-May-12.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08936259057326784 4.717e-08  
q 2.200003099286945 1.1006e-07 au
tp 2457405.846161656714
(2016-Jan-18.34616166)
9.7331e-05 TDB
node 309.1909789071024 0.00012494 deg
peri 201.6666058395438 0.00012764 deg
i 2.39032399775073 3.7591e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      7569 days (20.72 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55934  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:41:12  

Additional Information
 Jupiter MOID = 2.36109 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.224966978426636E-15 -5.178022140432264E-15 2.264962762325349E-12 -3.291986595362959E-15 5.932905341640705E-13 -1.010347056744603E-15
q -5.178022140432264E-15 1.21138939099188E-14 -5.420637952126747E-12 8.631614283441882E-15 -1.425774101400878E-12 2.459806873228167E-15
tp 2.264962762325349E-12 -5.420637952126747E-12 9.473344467175766E-9 -6.690081248883457E-12 2.578663095348038E-9 -1.929509006417094E-12
node -3.291986595362959E-15 8.631614283441882E-15 -6.690081248883457E-12 1.560985271917965E-8 -1.559782390265444E-8 1.998269934460581E-10
peri 5.932905341640705E-13 -1.425774101400878E-12 2.578663095348038E-9 -1.559782390265444E-8 1.629252448683751E-8 -2.001766386961054E-10
i -1.010347056744603E-15 2.459806873228167E-15 -1.929509006417094E-12 1.998269934460581E-10 -2.001766386961054E-10 1.413097227025664E-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 16.01   n/a E2021B55  
diameter diameter 3.739 km 0.358 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102269 (1999 TH44)          Discovered 1999-Oct-03 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 TH44 = 1999 TT164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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