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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04982019632954038 2.0632e-08  
a 2.788719687722191 9.3637e-09 au
q 2.649785125371817 5.9666e-08 au
i 1.527331159777409 9.2262e-07 deg
node 71.86044108706061 3.7496e-05 deg
peri 359.998495716374 3.857e-05 deg
M 9.264349933218003 1.3662e-05 deg
tp 2459156.725804716600
(2020-Nov-03.22580472)
6.4582e-05 TDB
period 1701.005512056477
4.66
8.5672e-06
2.346e-08
d
yr
n .2116395258265614 1.0659e-09 deg/d
Q 2.927654250072565 9.8302e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3351  
   data-arc span      30335 days (83.05 yr)  
   first obs. used      1938-02-23  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:25:42  

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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