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70536 (1999 TW121)
Classification: Main-belt Asteroid          SPK-ID: 2070536
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1140294266526596 2.149e-07  
a 2.527496515352933 9.753e-09 au
q 2.239287536840644 5.4592e-07 au
i 5.412934134571175 4.4202e-06 deg
node 341.2912812701798 3.5487e-05 deg
peri 193.7324189065575 4.2357e-05 deg
M 307.5322113445998 3.9631e-05 deg
tp 2459414.406772439555
(2021-Jul-18.90677244)
0.00016205 TDB
period 1467.689796953428
4.02
8.4952e-06
2.326e-08
d
yr
n .2452834384672249 1.4197e-09 deg/d
Q 2.815705493865223 1.0865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      16042 days (43.92 yr)  
   first obs. used      1977-02-19  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:41:14  

Additional Information
 Earth MOID = 1.24414 au 
 Jupiter MOID = 2.15385 au 
 T_jup = 3.437 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457304.5 (2015-Oct-09.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1136735601490105 2.1542e-07  
q 2.240112113969559 5.4707e-07 au
tp 2457949.116875545238
(2017-Jul-14.61687555)
0.00016256 TDB
node 341.3603262528045 3.5461e-05 deg
peri 194.1418701117782 4.2773e-05 deg
i 5.415640777978715 4.4216e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      16042 days (43.92 yr)  
   first obs. used      1977-02-19  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:41:14  

Additional Information
 Jupiter MOID = 2.15385 au 
 T_jup = 3.437 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.640746001262788E-14 -1.178384084774885E-13 -3.232866271220569E-11 -7.57006368352419E-13 -4.086532476030171E-12 -3.949547906698061E-14
q -1.178384084774885E-13 2.992843175407915E-13 8.216320684566031E-11 1.922563138068063E-12 1.038596852568507E-11 1.004573609749654E-13
tp -3.232866271220569E-11 8.216320684566031E-11 2.642450155615255E-8 5.383821761612865E-10 3.790801933775418E-9 3.032352221112702E-11
node -7.57006368352419E-13 1.922563138068063E-12 5.383821761612865E-10 1.257451690037435E-9 -1.16969068664717E-9 -1.454234917040526E-11
peri -4.086532476030171E-12 1.038596852568507E-11 3.790801933775418E-9 -1.16969068664717E-9 1.829492974057813E-9 1.93014932014296E-11
i -3.949547906698061E-14 1.004573609749654E-13 3.032352221112702E-11 -1.454234917040526E-11 1.93014932014296E-11 1.955070530895188E-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 14.58   n/a E2021B10  
diameter diameter 4.068 km 0.483 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.185   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70536 (1999 TW121)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TW121 = 1977 DR5 = 1993 DY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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