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249642 (1999 TU188)
Classification: Main-belt Asteroid          SPK-ID: 2249642
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1818026268055433 5.447e-08  
a 3.176679955137639 4.0685e-08 au
q 2.599151194773101 1.623e-07 au
i 9.277188174358992 6.4956e-06 deg
node 318.4454706387601 3.2529e-05 deg
peri 135.8846225199636 3.7589e-05 deg
M 195.8513593750785 2.1933e-05 deg
tp 2459943.460304100158
(2022-Dec-29.96030410)
0.00013895 TDB
period 2068.038505732947
5.66
3.973e-05
1.088e-07
d
yr
n .1740779966146762 3.3443e-09 deg/d
Q 3.754208715502177 4.8082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      8031 days (21.99 yr)  
   first obs. used      1998-08-20  
   last obs. used      2020-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:16:20  

Additional Information
 Earth MOID = 1.62544 au 
 Jupiter MOID = 1.45771 au 
 T_jup = 3.155 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457766.5 (2017-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1854908223344529 5.4535e-08  
q 2.576566354642686 1.644e-07 au
tp 2457870.592895138680
(2017-Apr-27.09289514)
0.00010846 TDB
node 318.9269407744336 3.2881e-05 deg
peri 133.9335841063947 3.7495e-05 deg
i 9.236822076835889 6.4718e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      8031 days (21.99 yr)  
   first obs. used      1998-08-20  
   last obs. used      2020-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:16:20  

Additional Information
 Jupiter MOID = 1.45771 au 
 T_jup = 3.155 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.974102360685201E-15 -8.818404278935337E-15 1.859390059543774E-12 1.073189017867799E-14 3.162764032907537E-13 2.1190668779424E-15
q -8.818404278935337E-15 2.702879196699678E-14 -3.806141049709282E-12 -3.868097355664922E-14 -6.753546229525435E-13 -4.115243394627999E-15
tp 1.859390059543774E-12 -3.806141049709282E-12 1.176421983920869E-8 -1.71219736281064E-11 1.987399455673943E-9 1.179131833353193E-11
node 1.073189017867799E-14 -3.868097355664922E-14 -1.71219736281064E-11 1.081159783196457E-9 -1.069386241534447E-9 -3.479537499250272E-11
peri 3.162764032907537E-13 -6.753546229525435E-13 1.987399455673943E-9 -1.069386241534447E-9 1.40586626094831E-9 3.626864752418167E-11
i 2.1190668779424E-15 -4.115243394627999E-15 1.179131833353193E-11 -3.479537499250272E-11 3.626864752418167E-11 4.188369321694328E-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 15.43   n/a E2021B55  
diameter diameter 5.297 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.35 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.052   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249642 (1999 TU188)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1999 TU188 = 1998 QR2 = 1999 VK215 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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