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2539 Ningxia (1964 TS2)
Classification: Main-belt Asteroid          SPK-ID: 2002539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169149495096595 4.2317e-08  
a 2.262038087239115 6.7289e-09 au
q 1.879415486893352 9.8029e-08 au
i 3.979253735505934 4.8276e-06 deg
node 193.30124531 4.4424e-05 deg
peri 215.5707075936494 4.5999e-05 deg
M 347.8590354145426 1.2177e-05 deg
tp 2458642.408198092778
(2019-Jun-07.90819809)
4.2118e-05 TDB
period 1242.648490340833
3.40
5.5448e-06
1.518e-08
d
yr
n .2897038082758699 1.2927e-09 deg/d
Q 2.644660687584879 7.8671e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1579  
   data-arc span      20111 days (55.06 yr)  
   first obs. used      1964-10-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52551  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:17:00  

Additional Information
 Earth MOID = .890481 au 
 Jupiter MOID = 2.72768 au 
 T_jup = 3.597 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO452197  
diameter diameter 3.634 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2539 Ningxia (1964 TS2)          Discovered 1964-Oct-08 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1964 TS2 = 1974 QC = 1981 SF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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