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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09222276841182439 3.6922e-08  
a 3.011286177655456 1.4924e-08 au
q 2.733577029871809 1.1488e-07 au
i 10.97931328650365 3.7274e-06 deg
node 157.2008513871631 2.1402e-05 deg
peri 272.1253193463456 2.9703e-05 deg
M 299.2650991673238 1.9988e-05 deg
tp 2458922.504765303628
(2020-Mar-14.00476530)
0.00010601 TDB
period 1908.650774431474
5.23
1.4189e-05
3.885e-08
d
yr
n .1886149131221936 1.4022e-09 deg/d
Q 3.288995325439104 1.63e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2461  
   data-arc span      23067 days (63.15 yr)  
   first obs. used      1956-10-09  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .438  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:13:51  

Additional Information
 Earth MOID = 1.77554 au 
 Jupiter MOID = 1.98606 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-January); 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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