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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05037224341678234 1.6939e-08  
a 2.409662611969996 7.3721e-09 au
q 2.288282500327523 4.1872e-08 au
i 5.894147912584011 7.8901e-07 deg
node 233.6862450835822 7.7841e-06 deg
peri 37.67986355952236 2.2465e-05 deg
M 312.821089338085 2.3652e-05 deg
tp 2459379.551594963473
(2021-Jun-14.05159496)
9.0015e-05 TDB
period 1366.258213309793
3.74
6.2699e-06
1.717e-08
d
yr
n .26349338396868 1.2092e-09 deg/d
Q 2.531042723612468 7.7434e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3038  
   data-arc span      24306 days (66.55 yr)  
   first obs. used      1954-07-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:27:13  

Additional Information
 Earth MOID = 1.27376 au 
 Jupiter MOID = 2.50069 au 
 T_jup = 3.511 
[ 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 12.68   n/a E2021B10  
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 9.699 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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.]
[Stephens, R. D.; Warner, B. D. (2019) MPB 46, 180-187.]
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

[ show close-approach data ]
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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