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12369 Pirandello (1994 CJ16)
Classification: Main-belt Asteroid          SPK-ID: 2012369
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08930172572811448 1.6768e-08  
a 2.292597161283406 6.7194e-09 au
q 2.087864278381421 3.843e-08 au
i 4.96543269823287 6.0545e-07 deg
node 121.6827813228281 1.0688e-05 deg
peri 83.43719743375934 1.604e-05 deg
M 277.2016021984401 9.6769e-06 deg
tp 2459688.114748384610
(2022-Apr-18.61474838)
3.4756e-05 TDB
period 1267.914744800554
3.47
5.5742e-06
1.526e-08
d
yr
n .2839307622821508 1.2483e-09 deg/d
Q 2.49733004418539 7.3194e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2241  
   data-arc span      10912 days (29.88 yr)  
   first obs. used      1991-06-06  
   last obs. used      2021-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46044  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:46:19  

Additional Information
 Earth MOID = 1.09146 au 
 Jupiter MOID = 2.46756 au 
 T_jup = 3.587 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457382.5 (2015-Dec-26.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08887853192210655 1.6818e-08  
q 2.088598846002065 3.8516e-08 au
tp 2457153.260206203913
(2015-May-10.76020620)
3.0376e-05 TDB
node 121.7131863251674 1.0696e-05 deg
peri 83.6454492187635 1.6057e-05 deg
i 4.963794352302247 6.0523e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2241  
   data-arc span      10912 days (29.88 yr)  
   first obs. used      1991-06-06  
   last obs. used      2021-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46044  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:46:19  

Additional Information
 Jupiter MOID = 2.46756 au 
 T_jup = 3.587 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.828485254236193E-16 -6.395630786844957E-16 1.363881117343199E-14 -3.97020771646952E-14 4.771846548044714E-14 1.044874251242298E-15
q -6.395630786844957E-16 1.483504105326003E-15 1.445483815455842E-14 8.949939243936613E-14 -9.276848604133895E-14 -2.261193966506132E-15
tp 1.363881117343199E-14 1.445483815455842E-14 9.227312778657271E-10 -6.75253259330435E-11 3.713691404762678E-10 3.445047983526494E-12
node -3.97020771646952E-14 8.949939243936613E-14 -6.75253259330435E-11 1.144091871901262E-10 -1.358080599316831E-10 1.381313948468555E-12
peri 4.771846548044714E-14 -9.276848604133895E-14 3.713691404762678E-10 -1.358080599316831E-10 2.578377876189138E-10 -4.402515314498273E-13
i 1.044874251242298E-15 -2.261193966506132E-15 3.445047983526494E-12 1.381313948468555E-12 -4.402515314498273E-13 3.662989085642047E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.09   n/a E2021B10  
diameter diameter 4.048 km 1.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 3.504 h n/a LCDB (Rev. 2020-October); 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:
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
geometric albedo albedo 0.271   0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

12369 Pirandello           Discovered 1994 Feb. 8 by E. W. Elst at the European Southern Observatory.
Luigi Pirandello (1867-1936) was a Sicilian writer who suffered from personal tragedy, leading him to explore madness, illusion and isolation. In 1925 he received the French Legion of Honor. In his well-known play Henri IV Pirandello's protagonist loses his mind, after falling from a horse.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

Alternate Designations
 1994 CJ16 = 1991 LZ3 = 1998 KO65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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