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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0498202245088726 2.8255e-08  
a 2.788719687928856 9.5553e-09 au
q 2.649785046983927 8.0351e-08 au
i 1.527329713665174 3.1221e-06 deg
node 71.86040937228105 0.00012214 deg
peri 359.9985222685144 0.00012656 deg
M 9.264353448002472 3.2949e-05 deg
tp 2459156.725788104324
(2020-Nov-03.22578810)
0.00015567 TDB
period 1701.005512245563
4.66
8.7425e-06
2.394e-08
d
yr
n .2116395258030352 1.0877e-09 deg/d
Q 2.927654328873785 1.0031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3268  
   data-arc span      30279 days (82.90 yr)  
   first obs. used      1938-02-23  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45625  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:00:52  

Additional Information
 Earth MOID = 1.66371 au 
 Jupiter MOID = 2.20299 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 12.64   n/a E2021B10  
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. 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:
[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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