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14768 (1238 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2014768
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0708812691623513 3.2512e-08  
a 2.868060071201311 1.5019e-08 au
q 2.664768333320699 9.8882e-08 au
i 1.580330946420101 3.8413e-06 deg
node 339.4967439229571 0.00015315 deg
peri 345.5032748620719 0.00015686 deg
M 309.6561469550741 3.4873e-05 deg
tp 2459448.598844815300
(2021-Aug-22.09884482)
0.00017213 TDB
period 1774.111013191708
4.86
1.3936e-05
3.815e-08
d
yr
n .2029185306461422 1.5939e-09 deg/d
Q 3.071351809081923 1.6084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      17990 days (49.25 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:38:47  

Additional Information
 Earth MOID = 1.65072 au 
 Jupiter MOID = 2.15693 au 
 T_jup = 3.295 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457141.5 (2015-Apr-29.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06942559539332391 3.2618e-08  
q 2.668238954616283 9.8895e-08 au
tp 2457678.311831149542
(2016-Oct-16.81183115)
0.00017351 TDB
node 339.5354081080254 0.00015317 deg
peri 346.1939376013477 0.00015701 deg
i 1.580332269886697 3.8414e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      17990 days (49.25 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:38:47  

Additional Information
 Jupiter MOID = 2.15693 au 
 T_jup = 3.295 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.063921033962411E-15 -3.196091430524532E-15 1.00039577797567E-12 -1.137851433957446E-15 2.262522116373277E-13 5.143206854019203E-17
q -3.196091430524532E-15 9.780182977067207E-15 -2.679264966498817E-12 3.271225846182884E-15 -6.258831132953078E-13 -1.034945229441618E-16
tp 1.00039577797567E-12 -2.679264966498817E-12 3.010448617063185E-8 -3.017295197102016E-11 6.010322437619407E-9 3.053388408379286E-13
node -1.137851433957446E-15 3.271225846182884E-15 -3.017295197102016E-11 2.346161348033521E-8 -2.345840583786669E-8 2.008454461560943E-10
peri 2.262522116373277E-13 -6.258831132953078E-13 6.010322437619407E-9 -2.345840583786669E-8 2.465185878420808E-8 -2.00712008341987E-10
i 5.143206854019203E-17 -1.034945229441618E-16 3.053388408379286E-13 2.008454461560943E-10 -2.00712008341987E-10 1.47563958798727E-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 14.46   n/a E2020-QM5  
diameter diameter 4.130 km 0.538 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.339 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.285   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14768 (1238 T-1)          Discovered 1971-Mar-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20000418/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1238 T-1 = 1992 SD19 = 1999 AS7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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