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3704 Gaoshiqi (1981 YX1)
Classification: Main-belt Asteroid          SPK-ID: 2003704
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05028617180494151 3.4994e-08  
a 2.410450044807086 8.4466e-09 au
q 2.289237739726688 8.3524e-08 au
i 5.894172574070571 3.9972e-06 deg
node 233.6969515242099 3.6065e-05 deg
peri 37.19087592290636 5.5964e-05 deg
M 155.2661618318705 4.3152e-05 deg
tp 2458010.950946274974
(2017-Sep-14.45094628)
0.00016357 TDB
period 1366.927969603772
3.74
7.1849e-06
1.967e-08
d
yr
n .2633642796147864 1.3843e-09 deg/d
Q 2.531662349887484 8.8713e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2541  
   data-arc span      23863 days (65.33 yr)  
   first obs. used      1954-07-28  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45787  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:52:41  

Additional Information
 Earth MOID = 1.27601 au 
 Jupiter MOID = 2.50073 au 
 T_jup = 3.511 
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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 12.6   n/a MPO347551  
diameter diameter 9.576 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.7725 h n/a LCDB (Rev. 2019-January); 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2010) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J.; Inasaridze, R.Y.; Kvaratskhelia, O.I.; Ayvazian, V.; et al. (2013) Minor Planet Bull. 40, 169-172.]
geometric albedo albedo 0.243   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Xk   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)

3704 Gaoshiqi           Discovered 1981 Dec. 20 at the Purple Mountain Observatory.
Gao Shi-Qi (1905-1988) is considered the founder of science popularization in China. His contraction of encephalitis during a scientific experiment at the University of Chicago in 1928 caused paralysis of his whole body.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990928/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1981 YX1 = 1951 WH1 = 1957 HR = 1958 UB = 1972 HD = 1973 TR = 1977 TK7 = 1977 VH2 = 1979 FL1 = 1980 OJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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