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3901 Nanjingdaxue (1958 GQ)
Classification: Main-belt Asteroid          SPK-ID: 2003901
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2814953971211352 3.3937e-08  
a 2.621542924829074 1.2264e-08 au
q 1.883590658134212 8.8197e-08 au
i 12.809980441141 4.4329e-06 deg
node 8.535098042159891 1.6961e-05 deg
peri 231.6963176151417 1.904e-05 deg
M 195.924955108927 1.1667e-05 deg
tp 2459707.100462959351
(2022-May-07.60046296)
5.3171e-05 TDB
period 1550.364754336914
4.24
1.0879e-05
2.979e-08
d
yr
n .2322034211581202 1.6294e-09 deg/d
Q 3.359495191523936 1.5716e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3247  
   data-arc span      23996 days (65.70 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:59:02  

Additional Information
 Earth MOID = .902198 au 
 Jupiter MOID = 1.78272 au 
 T_jup = 3.313 
[ 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 12.5   n/a MPO319133  
diameter diameter 19.199 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 21.4 h n/a LCDB (Rev. 2019-August); 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:
[Ditteon, R.; Johnson, D.; Lin, W.; Wang, Z.; Zhao, B. (2019) Minor Planet Bull. 46, 280-282.]
geometric albedo albedo 0.053   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3901 Nanjingdaxue           Discovered 1958 Apr. 7 at the Purple Mountain Observatory.
One of the oldest universities in China, Nanjing Daxue (Nanjing University) will be celebrating its centennial in 2002. In 1952 the School of Liberal Arts and the School of Sciences from an earlier establishment also merged with the Nanjing University.
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
 1958 GQ = 1954 KE = 1958 GH = 1976 SC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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