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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812048085207605 5.4292e-08  
a 3.16842325845354 4.1475e-08 au
q 2.594289728592742 1.6203e-07 au
i 9.308566671987171 6.5102e-06 deg
node 318.3652238730656 3.2334e-05 deg
peri 137.4343463721726 3.7717e-05 deg
M 262.9445822268789 2.3342e-05 deg
tp 2459951.867547447058
(2023-Jan-07.36754745)
0.00014081 TDB
period 2059.981005370634
5.64
4.0448e-05
1.107e-07
d
yr
n .1747588929516505 3.4314e-09 deg/d
Q 3.742556788314337 4.899e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 02:08:16  

Additional Information
 Earth MOID = 1.6203 au 
 Jupiter MOID = 1.46036 au 
 T_jup = 3.157 
[ show covariance matrix ]

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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