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9517 Niehaisheng (1977 VL1)
Classification: Main-belt Asteroid          SPK-ID: 2009517
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .229139899315923 3.5429e-08  
a 2.609826673252313 7.8412e-09 au
q 2.011811252111268 9.4034e-08 au
i 5.803769697200084 3.7227e-06 deg
node 49.97775336773026 3.4922e-05 deg
peri 329.2471502054967 3.5783e-05 deg
M 41.22875668161927 6.6424e-06 deg
tp 2458824.134488432309
(2019-Dec-06.63448843)
2.842e-05 TDB
period 1539.982994264651
4.22
6.9403e-06
1.9e-08
d
yr
n .2337688152016911 1.0535e-09 deg/d
Q 3.207842094393359 9.6379e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1694  
   data-arc span      18292 days (50.08 yr)  
   first obs. used      1970-01-04  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51556  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:21:10  

Additional Information
 Earth MOID = 1.01709 au 
 Jupiter MOID = 2.25474 au 
 T_jup = 3.365 
[ 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 14.2   n/a MPO502241  
diameter diameter 7.238 km 2.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.077   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

9517 Niehaisheng           Discovered 1977 Nov. 3 at the Purple Mountain Observatory.
Nie Haisheng (b. 1964) is a space hero of China. In the Shenzhou spaceship, he and Fei Junlong made a series of scientific experiments in space for five days. They landed smoothly on 2005 Oct. 17 on the grasslands in Nei Monggol, Inner Mongolia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

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Alternate Designations
 1977 VL1 = 1970 AN = 4318 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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