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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 ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04998455769314981 2.0576e-08  
a 2.789127686493342 9.3763e-09 au
q 2.649714372734254 5.9505e-08 au
i 1.527275755594521 9.2228e-07 deg
node 71.85896464266168 3.7486e-05 deg
peri 359.992464877207 3.8542e-05 deg
M 50.73834895534359 1.3584e-05 deg
tp 2459156.707910394339
(2020-Nov-03.20791039)
6.4357e-05 TDB
period 1701.378819677707
4.66
8.5794e-06
2.349e-08
d
yr
n .2115930889913129 1.067e-09 deg/d
Q 2.92854100025243 9.845e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3401  
   data-arc span      30406 days (83.25 yr)  
   first obs. used      1938-02-23  
   last obs. used      2021-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45052  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:24:15  

Additional Information
 Earth MOID = 1.66393 au 
 Jupiter MOID = 2.20217 au 
 T_jup = 3.328 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.63   n/a MPO614063  
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

Alternate Designations
 1964 VP1 = 1938 DV1 = 1975 BH1 = 1977 RF8 = 1979 FG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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