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11637 Yangjiachi (1996 YJ2)
Classification: Main-belt Asteroid          SPK-ID: 2011637
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1904765086090558 7.2709e-09  
a 2.783422187717549 1.2233e-08 au
q 2.253245647416131 1.7998e-08 au
i 10.76607449301173 3.0937e-07 deg
node 114.7808930174453 2.1432e-06 deg
peri 352.5059503968383 8.8066e-06 deg
M 64.17288057012759 6.8997e-06 deg
tp 2458898.145743057348
3.1822e-05 TDB
period 1696.160925492618
n .2122440121036539 1.3992e-09 deg/d
Q 3.313598728018968 1.4563e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1880  
   data-arc span      19036 days (52.12 yr)  
   first obs. used      1969-01-15  
   last obs. used      2021-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:45:11  

Additional Information
 Earth MOID = 1.27032 au 
 Jupiter MOID = 1.82458 au 
 T_jup = 3.280 
[ 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 13.41   n/a E2021B10  
diameter diameter 5.952 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.92727 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:
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.262   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

11637 Yangjiachi           Discovered 1996 Dec. 24 by the Beijing Schmidt CCD Asteroid Program at Xinglong.
Jiachi Yang (b. 1919), an expert in automatic control and space technology, devoted himself to the development of artificial earth satellites in China. He is a member of the Chinese Academy of Sciences and of the International Academy of Astronautics, and he received several highest scientific achievement prizes in China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1996 YJ2 = 1969 AU = 1991 XQ4 = 1998 KE60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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