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JPL Small-Body Database Browser
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74978 (1999 TY234)
Classification: Main-belt Asteroid          SPK-ID: 2074978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1934503699988802 3.2046e-08  
a 2.426372703890341 1.2715e-08 au
q 1.956990006567571 7.7495e-08 au
i 10.78343754067716 6.0688e-06 deg
node 47.27054648047454 2.521e-05 deg
peri 246.1234714491005 3.1872e-05 deg
M 125.7678723039856 1.9975e-05 deg
tp 2458118.217051599228
(2017-Dec-30.71705160)
7.5668e-05 TDB
period 1380.494543190073
3.78
1.0852e-05
2.971e-08
d
yr
n .2607761122822733 2.0499e-09 deg/d
Q 2.895755401213111 1.5175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      7892 days (21.61 yr)  
   first obs. used      1998-04-20  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56407  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:50:13  

Additional Information
 Earth MOID = .969346 au 
 Jupiter MOID = 2.34362 au 
 T_jup = 3.461 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .194599886439889 3.2151e-08  
q 1.953435370742415 7.7812e-08 au
tp 2456738.391416497466
(2014-Mar-21.89141650)
7.3423e-05 TDB
node 47.30940461074312 2.5236e-05 deg
peri 246.1252848695316 3.1813e-05 deg
i 10.78054021128059 6.0672e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      7892 days (21.61 yr)  
   first obs. used      1998-04-20  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56407  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:50:13  

Additional Information
 Jupiter MOID = 2.34362 au 
 T_jup = 3.461 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.033658886330651E-15 -2.480236222889853E-15 7.547106442326143E-13 -7.014556535601588E-16 1.76913676225159E-13 -4.036938127424617E-15
q -2.480236222889853E-15 6.054774185305474E-15 -1.777719995736083E-12 1.590478475378426E-15 -4.103045210679597E-13 9.963434017033917E-15
tp 7.547106442326143E-13 -1.777719995736083E-12 5.39091930778421E-9 1.003241968680937E-11 1.444559776272243E-9 -2.380637440687366E-11
node -7.014556535601588E-16 1.590478475378426E-15 1.003241968680937E-11 6.368334308111474E-10 -6.225417537999699E-10 -8.499657951602935E-11
peri 1.76913676225159E-13 -4.103045210679597E-13 1.444559776272243E-9 -6.225417537999699E-10 1.01204186013535E-9 7.72786300358103E-11
i -4.036938127424617E-15 9.963434017033917E-15 -2.380637440687366E-11 -8.499657951602935E-11 7.72786300358103E-11 3.681144519180546E-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 15.7   n/a MPO319944  
diameter diameter 4.015 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74978 (1999 TY234)          Discovered 1999-Oct-03 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TY234 = 1998 HY135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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