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JPL Small-Body Database Browser
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2169 Taiwan (1964 VP1)
Classification: Main-belt Asteroid          SPK-ID: 2002169
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04959453383991747 2.8348e-08  
a 2.788022795124486 1.0587e-08 au
q 2.649752104265223 8.0991e-08 au
i 1.527423506498277 3.1318e-06 deg
node 71.85994443196529 0.00013326 deg
peri .0739753925199429 0.00013822 deg
M 326.8548307275494 3.7376e-05 deg
tp 2459157.052730891211
(2020-Nov-03.55273089)
0.00017675 TDB
period 1700.367937709703
4.66
9.6851e-06
2.652e-08
d
yr
n .211718882728934 1.2059e-09 deg/d
Q 2.926293485983748 1.1112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2946  
   data-arc span      29920 days (81.92 yr)  
   first obs. used      1938-02-23  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47479  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:14:13  

Additional Information
 Earth MOID = 1.66423 au 
 Jupiter MOID = 2.20423 au 
 T_jup = 3.328 
[ 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 12.5   n/a MPO435717  
diameter diameter 19.263 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.252 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.042   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2169 Taiwan           Discovered 1964 Nov. 9 at the Purple Mountain Observatory.
Named for an insular province of China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5184Last Updated: 2006-03-21

[ show close-approach data ]
Alternate Designations
 1964 VP1 = 1938 DV1 = 1975 BH1 = 1977 RF8 = 1979 FG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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