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3542 Tanjiazhen (1964 TN2)
Classification: Main-belt Asteroid          SPK-ID: 2003542
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08531815714080956 2.4333e-08  
a 3.171051592983308 1.5914e-08 au
q 2.900503314871544 7.4652e-08 au
i 8.085576274570762 1.3556e-06 deg
node 265.9764865427956 8.7356e-06 deg
peri 61.01841109795571 1.5813e-05 deg
M 40.94444850967574 1.4635e-05 deg
tp 2458965.917335954279
(2020-Apr-26.41733595)
8.3876e-05 TDB
period 2062.544792525488
5.65
1.5526e-05
4.251e-08
d
yr
n .1745416639214885 1.3139e-09 deg/d
Q 3.441599871095072 1.7271e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2349  
   data-arc span      20580 days (56.34 yr)  
   first obs. used      1964-10-09  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:14:45  

Additional Information
 Earth MOID = 1.89752 au 
 Jupiter MOID = 1.83561 au 
 T_jup = 3.181 
[ 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 12.54   n/a E2021B10  
diameter diameter 18.437 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.106   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B C   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)

3542 Tanjiazhen (1964 TN2)          Discovered 1964-Oct-09 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1964 TN2 = 1981 SU7 = 1981 WS5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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