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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1912874681567786 3.3246e-08  
a 2.269920180753684 5.2132e-09 au
q 1.835712896459334 7.5218e-08 au
i 5.068353818369546 3.1435e-06 deg
node 224.3829907767245 4.078e-05 deg
peri 84.55246495488609 4.1638e-05 deg
M 152.5639577471251 8.0384e-06 deg
tp 2458671.124605249956
(2019-Jul-06.62460525)
2.7873e-05 TDB
period 1249.149176018981
3.42
4.3033e-06
1.178e-08
d
yr
n .2881961633656234 9.9282e-10 deg/d
Q 2.704127465048033 6.2104e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1851  
   data-arc span      12908 days (35.34 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:06:17  

Additional Information
 Earth MOID = .827798 au 
 Jupiter MOID = 2.56414 au 
 T_jup = 3.584 
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Orbital Elements at Epoch 2457212.5 (2015-Jul-09.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1914617896835905 3.32e-08  
q 1.834792485598462 7.5112e-08 au
tp 2457422.980365297703
(2016-Feb-04.48036530)
2.8317e-05 TDB
node 224.3988261246167 4.0768e-05 deg
peri 84.68733495151936 4.1628e-05 deg
i 5.069181581500255 3.1448e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1851  
   data-arc span      12908 days (35.34 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:06:17  

Additional Information
 Jupiter MOID = 2.56414 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.102240543372565E-15 -2.489810184489321E-15 2.449146710825457E-13 -6.784826848809402E-16 5.633351945620259E-14 -2.483517477998819E-15
q -2.489810184489321E-15 5.641875594270255E-15 -5.779570916347883E-13 2.024655106776602E-15 -1.364766592496821E-13 5.68066786483006E-15
tp 2.449146710825457E-13 -5.779570916347883E-13 8.018563525402562E-10 8.64963789179773E-14 2.50008263997467E-10 -1.440900027485442E-12
node -6.784826848809402E-16 2.024655106776602E-15 8.64963789179773E-14 1.662043334399498E-9 -1.655308647383105E-9 -2.702764017079991E-11
peri 5.633351945620259E-14 -1.364766592496821E-13 2.50008263997467E-10 -1.655308647383105E-9 1.732858217953465E-9 2.654771173359478E-11
i -2.483517477998819E-15 5.68066786483006E-15 -1.440900027485442E-12 -2.702764017079991E-11 2.654771173359478E-11 9.889886656563793E-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

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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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