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3704 Gaoshiqi (1981 YX1)
Classification: Main-belt Asteroid          SPK-ID: 2003704
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05124094696506711 4.9087e-08  
a 2.410004540741218 1.3255e-08 AU
q 2.286513625883526 1.1555e-07 AU
i 5.890269319315845 5.1795e-06 deg
node 233.7517281302936 5.3319e-05 deg
peri 37.23269163232987 7.8056e-05 deg
M 93.73298674963129 5.8139e-05 deg
tp 2456644.692438632824
(2013-Dec-18.19243863)
0.00022041 JED
period 1366.549029684975
3.74
1.1274e-05
3.087e-08
d
yr
n .2634373097341332 2.1733e-09 deg/d
Q 2.53349545559891 1.3934e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1341  
   data-arc span      22071 days (60.43 yr)  
   first obs. used      1954-07-28  
   last obs. used      2014-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51203  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:07:13  

Additional Information
 Earth MOID = 1.2752 AU 
 T_jup = 3.511 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a PDS3 (MPC 17269)  
rotation period rot_per 9.7787 h n/a LCDB (Rev. 2015-Feb); 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 Bul. 40, 169-172.]
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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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