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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936251337872338 3.2055e-08  
a 2.426040686006346 1.2528e-08 au
q 1.956298233605095 7.7459e-08 au
i 10.78245120557005 4.9108e-06 deg
node 47.25891836821077 2.3148e-05 deg
peri 246.195728445666 2.8398e-05 deg
M 230.0000003359035 1.7999e-05 deg
tp 2459498.909598174429
(2021-Oct-11.40959817)
7.0798e-05 TDB
period 1380.211198510863
3.78
1.0691e-05
2.927e-08
d
yr
n .2608296472224042 2.0205e-09 deg/d
Q 2.895783138407598 1.4954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      766  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1998-04-20  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55333  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:41:37  

Additional Information
 Earth MOID = .969289 au 
 Jupiter MOID = 2.34517 au 
 T_jup = 3.461 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457213.5 (2015-Jul-10.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1945803198936704 3.2112e-08  
q 1.953204873095451 7.7632e-08 au
tp 2456738.278773586311
(2014-Mar-21.77877359)
6.2855e-05 TDB
node 47.30908538695343 2.3164e-05 deg
peri 246.0836006297828 2.8369e-05 deg
i 10.78113621942684 4.91e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      766  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1998-04-20  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55333  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:41:37  

Additional Information
 Jupiter MOID = 2.34517 au 
 T_jup = 3.461 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.031153022882816E-15 -2.472189936008496E-15 7.258099187741548E-13 -8.303495084058159E-15 1.76133541467527E-13 -1.237893170034822E-15
q -2.472189936008496E-15 6.026778499224885E-15 -1.633001150211835E-12 1.979372564116386E-14 -3.862743104300767E-13 3.070018475998665E-15
tp 7.258099187741548E-13 -1.633001150211835E-12 3.950777938059286E-9 -1.562440748201016E-11 1.047997134668074E-9 -1.017670498677266E-11
node -8.303495084058159E-15 1.979372564116386E-14 -1.562440748201016E-11 5.365774313457476E-10 -5.306874091900844E-10 -4.94079895089559E-11
peri 1.76133541467527E-13 -3.862743104300767E-13 1.047997134668074E-9 -5.306874091900844E-10 8.047890749171896E-10 4.599867940951025E-11
i -1.237893170034822E-15 3.070018475998665E-15 -1.017670498677266E-11 -4.94079895089559E-11 4.599867940951025E-11 2.410835857988365E-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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