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12512 Split (1998 HW7)
Classification: Main-belt Asteroid          SPK-ID: 2012512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1912874682151517 3.3227e-08  
a 2.269920178374552 5.1984e-09 au
q 1.835712894402798 7.5163e-08 au
i 5.068353794081768 3.1194e-06 deg
node 224.3829910303821 4.0709e-05 deg
peri 84.55246522817404 4.1546e-05 deg
M 152.5639576228228 7.9818e-06 deg
tp 2458671.124606513535
(2019-Jul-06.62460651)
2.766e-05 TDB
period 1249.149174055107
3.42
4.2911e-06
1.175e-08
d
yr
n .2881961638187164 9.9001e-10 deg/d
Q 2.704127462346305 6.1928e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1878  
   data-arc span      12930 days (35.40 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:24:15  

Additional Information
 Earth MOID = .827798 au 
 Jupiter MOID = 2.56414 au 
 T_jup = 3.584 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457229.5 (2015-Jul-26.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1914678455938362 3.318e-08  
q 1.834778560651083 7.5059e-08 au
tp 2457422.981616451594
(2016-Feb-04.48161645)
2.8064e-05 TDB
node 224.3988340752125 4.0698e-05 deg
peri 84.68846618219571 4.1536e-05 deg
i 5.069189423778002 3.1207e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1878  
   data-arc span      12930 days (35.40 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:24:15  

Additional Information
 Jupiter MOID = 2.56414 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.100913744510228E-15 -2.486565660429425E-15 2.406796608996845E-13 -1.105545190706482E-15 5.518902247485842E-14 -2.407371975092581E-15
q -2.486565660429425E-15 5.633873392841107E-15 -5.671405567730623E-13 3.003558023224954E-15 -1.3342998996621E-13 5.507289052598117E-15
tp 2.406796608996845E-13 -5.671405567730623E-13 7.876104566424542E-10 -9.026272816406219E-15 2.448002356193732E-10 -1.405424919022679E-12
node -1.105545190706482E-15 3.003558023224954E-15 -9.026272816406219E-15 1.656299925209007E-9 -1.649603738566153E-9 -2.609816765118856E-11
peri 5.518902247485842E-14 -1.3342998996621E-13 2.448002356193732E-10 -1.649603738566153E-9 1.725216340881128E-9 2.56318156760425E-11
i -2.407371975092581E-15 5.507289052598117E-15 -1.405424919022679E-12 -2.609816765118856E-11 2.56318156760425E-11 9.738954863478222E-12

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 14.79   n/a E2021B10  
diameter diameter 4.626 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.7781 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
[Benishek, V. (2020) Minor Planet Bull. 47, 75-83.]
geometric albedo albedo 0.119   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12512 Split           Discovered 1998 Apr. 21 by K. Korlevic and M. Dusić at the Visnjan Observatory.
Split is the largest Dalmatian city and the second-largest urban center in Croatia. Located on the shores of the eastern Adriatic Sea, it is a vital link to the numerous surrounding islands. The historic city of Split is built around the "Palace of Diocletian", the world's best preserved Roman palace.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 1998 HW7 = 1985 SE3 = 1985 SQ5 = 1995 MF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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