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2309 Mr. Spock (1971 QX1)
Classification: Main-belt Asteroid          SPK-ID: 2002309
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0925124497131407 3.6854e-08  
a 3.012431617041933 1.4603e-08 au
q 2.733744188556066 1.1486e-07 au
i 10.97849701765879 3.5583e-06 deg
node 157.1908361151571 2.1367e-05 deg
peri 271.9882498935164 2.9434e-05 deg
M 14.82716662159037 1.9412e-05 deg
tp 2458921.844356266275
(2020-Mar-13.34435627)
0.00010299 TDB
period 1909.739902896138
5.23
1.3887e-05
3.802e-08
d
yr
n .1885073456621275 1.3707e-09 deg/d
Q 3.2911190455278 1.5954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2579  
   data-arc span      23128 days (63.32 yr)  
   first obs. used      1956-10-09  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43165  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:17:55  

Additional Information
 Earth MOID = 1.77592 au 
 Jupiter MOID = 1.98403 au 
 T_jup = 3.215 
[ 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 11.4   n/a MPO502175  
diameter diameter 19.707 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.722 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.144   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2309 Mr. Spock (1971 QX1)          Discovered 1971-Aug-16 by Gibson, J. at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1971 QX1 = 1935 SN1 = 1948 EJ1 = 1956 TL = 1974 CU = 1977 SF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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