Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1455134135461597 4.4153e-08  
a 2.22916445973365 9.5299e-09 au
q 1.904791129842025 1.0313e-07 au
i 4.934427672738658 6.1589e-06 deg
node 10.18971143572672 4.6337e-05 deg
peri 78.52128412286201 5.1895e-05 deg
M 68.01938871856127 2.1745e-05 deg
tp 2458970.810143572519
(2020-May-01.31014357)
7.3207e-05 TDB
period 1215.658503724969
3.33
7.7956e-06
2.134e-08
d
yr
n .2961357970983655 1.899e-09 deg/d
Q 2.553537789625274 1.0917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      7785 days (21.31 yr)  
   first obs. used      1999-09-03  
   last obs. used      2020-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:59:32  

Additional Information
 Earth MOID = .92809 au 
 Jupiter MOID = 2.63569 au 
 T_jup = 3.625 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457328.5 (2015-Nov-02.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446306409085066 4.402e-08  
q 1.907041079167495 1.0271e-07 au
tp 2457754.165389741305
(2016-Dec-31.66538974)
7.3377e-05 TDB
node 10.25033211390193 4.6272e-05 deg
peri 78.27808309085425 5.1947e-05 deg
i 4.93811334746516 6.1617e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      7785 days (21.31 yr)  
   first obs. used      1999-09-03  
   last obs. used      2020-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:59:32  

Additional Information
 Jupiter MOID = 2.63569 au 
 T_jup = 3.625 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.937767441880726E-15 -4.511505046281299E-15 -1.645277170081694E-13 8.550621224330077E-15 3.845463846514276E-14 -3.065652363906352E-15
q -4.511505046281299E-15 1.054974689396246E-14 3.896242086164958E-13 -2.078380959401191E-14 -9.245303387391391E-14 7.413836880048485E-15
tp -1.645277170081694E-13 3.896242086164958E-13 5.38424497503159E-9 -3.400087649589563E-11 1.734397554938214E-9 2.963633199549391E-12
node 8.550621224330077E-15 -2.078380959401191E-14 -3.400087649589563E-11 2.14113672171977E-9 -2.142472738940469E-9 -5.608349252070868E-12
peri 3.845463846514276E-14 -9.245303387391391E-14 1.734397554938214E-9 -2.142472738940469E-9 2.698489232259804E-9 6.278757339209632E-12
i -3.065652363906352E-15 7.413836880048485E-15 2.963633199549391E-12 -5.608349252070868E-12 6.278757339209632E-12 3.796619281544632E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-05 13:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin