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18949 Tumaneng (2000 QX85)
Classification: Main-belt Asteroid          SPK-ID: 2018949
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06756485005529055 4.2226e-08  
a 2.299116409100237 8.8808e-09 au
q 2.143776953659721 9.879e-08 au
i 6.85480802339468 5.3893e-06 deg
node 176.2932924833152 2.7652e-05 deg
peri 48.64142565816474 4.5692e-05 deg
M 40.14052248912241 3.492e-05 deg
tp 2459058.522217471448
(2020-Jul-28.02221747)
0.00012365 TDB
period 1273.326766589287
3.49
7.3778e-06
2.02e-08
d
yr
n .2827239711329483 1.6381e-09 deg/d
Q 2.454455864540753 9.4809e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1106  
   data-arc span      10834 days (29.66 yr)  
   first obs. used      1990-11-10  
   last obs. used      2020-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:43:00  

Additional Information
 Earth MOID = 1.14147 au 
 Jupiter MOID = 2.51754 au 
 T_jup = 3.580 
[ 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 15.29   n/a E2021B10  
diameter diameter 1.949 km 0.511 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.72704 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.465   0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18949 Tumaneng           Discovered 2000 Aug. 25 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Karen Andres Tumaneng (b. 1984) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her biochemistry project. She attends the Waipahu High School, Waipahu, Hawaii, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 2000 QX85 = 1992 EE16 = 1999 FC52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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