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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
2.7873e-05 TDB
period 1249.149176018981
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 
[ 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 14.79   n/a E2021B10  
diameter diameter 4.626 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
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)]
[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] (  

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2038-Jun-17 03:11 < 00:01 Eunom 0.0491288568731264 0.0491253751194061 0.0491323386268307 5.52036045001296 5.52036039825349 2465591.632558537 0.348435475068596 173.539933619783 42.2614757790973 -0.351185058340489 42339.9356328827 T 29 CATAB v2.0f-lin.ifort 2021-Feb-24 02:06:21 2021-Feb-24 02:06

Alternate Designations
 1998 HW7 = 1985 SE3 = 1985 SQ5 = 1995 MF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2021-Mar-09 02:16 UT
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