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74920 (1999 TU144)
Classification: Main-belt Asteroid          SPK-ID: 2074920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454870578265992 4.6051e-08  
a 2.229254633511313 9.764e-09 au
q 1.904926935735439 1.077e-07 au
i 4.93417992908241 6.1664e-06 deg
node 10.19385007429389 4.6778e-05 deg
peri 78.55780942264613 5.2335e-05 deg
M 8.763207916016247 2.1698e-05 deg
tp 2458970.906348239778
(2020-May-01.40634824)
7.325e-05 TDB
period 1215.732267884269
3.33
7.9873e-06
2.187e-08
d
yr
n .2961178291553498 1.9455e-09 deg/d
Q 2.553582331287188 1.1185e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      7452 days (20.40 yr)  
   first obs. used      1999-09-03  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55788  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:03  

Additional Information
 Earth MOID = .928532 au 
 Jupiter MOID = 2.63569 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457248.5 (2015-Aug-14.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446561975530669 4.5892e-08  
q 1.90695803259707 1.0726e-07 au
tp 2457754.142772206561
(2016-Dec-31.64277221)
7.3478e-05 TDB
node 10.25175539009732 4.6711e-05 deg
peri 78.27507590742984 5.2383e-05 deg
i 4.938065355839507 6.1694e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      7452 days (20.40 yr)  
   first obs. used      1999-09-03  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55788  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:03  

Additional Information
 Jupiter MOID = 2.63569 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.106037751714426E-15 -4.91235925221438E-15 -1.10909728450892E-13 7.844131523366573E-15 7.103078211331883E-14 -3.468349480159105E-15
q -4.91235925221438E-15 1.150468655139821E-14 2.622565846272986E-13 -1.907805039550731E-14 -1.699680219286245E-13 8.370854553041394E-15
tp -1.10909728450892E-13 2.622565846272986E-13 5.399012865219542E-9 -3.250493491503724E-11 1.742376606137215E-9 2.922759373744676E-12
node 7.844131523366573E-15 -1.907805039550731E-14 -3.250493491503724E-11 2.181898261175062E-9 -2.182655771694356E-9 -3.656699880556879E-12
peri 7.103078211331883E-14 -1.699680219286245E-13 1.742376606137215E-9 -2.182655771694356E-9 2.743943818402818E-9 4.286579268093552E-12
i -3.468349480159105E-15 8.370854553041394E-15 2.922759373744676E-12 -3.656699880556879E-12 4.286579268093552E-12 3.80619684387461E-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 16.3   n/a MPO493392  

74920 (1999 TU144)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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