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22444 (1996 TK12)
Classification: Main-belt Asteroid          SPK-ID: 2022444
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2207157406575816 3.0503e-08  
a 2.297357093548449 6.4589e-09 au
q 1.790294221090954 7.2081e-08 au
i 1.52455011454228 3.5403e-06 deg
node 24.77694898011013 0.0001314 deg
peri 330.03278337474 0.00013165 deg
M .8570052433209029 8.8846e-06 deg
tp 2459197.472235004452
(2020-Dec-13.97223500)
3.1386e-05 TDB
period 1271.865495447516
3.48
5.3636e-06
1.468e-08
d
yr
n .2830487982326553 1.1937e-09 deg/d
Q 2.804419966005944 7.8844e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1662  
   data-arc span      14017 days (38.38 yr)  
   first obs. used      1982-09-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:25  

Additional Information
 Earth MOID = .784069 au 
 Jupiter MOID = 2.63734 au 
 T_jup = 3.561 
[ 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 15.21   n/a E2021B10  
diameter diameter 1.983 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.449   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

22444 (1996 TK12)          Discovered 1996-Oct-15 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 TK12 = 1982 SW11 = 1999 NY12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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