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18188 (2000 QD55)
Classification: Main-belt Asteroid          SPK-ID: 2018188
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2337865573155855 4.8388e-08  
a 3.101330535687347 1.9716e-08 au
q 2.376281146651302 1.4675e-07 au
i 3.366842643231198 5.1279e-06 deg
node 51.87437055561214 7.2143e-05 deg
peri 300.9721933798733 7.2677e-05 deg
M 242.7941091646381 1.2151e-05 deg
tp 2459849.982493069983
(2022-Sep-27.48249307)
7.1671e-05 TDB
period 1994.897149270681
5.46
1.9023e-05
5.208e-08
d
yr
n .1804604313217918 1.7208e-09 deg/d
Q 3.826379924723393 2.4325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1121  
   data-arc span      10303 days (28.21 yr)  
   first obs. used      1992-03-01  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53405  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:24:54  

Additional Information
 Earth MOID = 1.37166 au 
 Jupiter MOID = 1.62195 au 
 T_jup = 3.176 
[ 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 14.25   n/a E2021B10  
diameter diameter 6.938 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 11.85 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.051   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18188 (2000 QD55)          Discovered 2000-Aug-25 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QD55 = 1999 JN113 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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