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JPL Small-Body Database Browser
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12516 (1998 HB45)
Classification: Main-belt Asteroid          SPK-ID: 2012516
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07816994814421858 2.9158e-08  
a 2.193711550178069 7.0094e-09 au
q 2.022229232057276 6.3727e-08 au
i 4.88689835554587 4.3938e-06 deg
node 13.40006164737865 4.0799e-05 deg
peri 253.9675681599934 5.1565e-05 deg
M 115.2686863756183 3.1546e-05 deg
tp 2458220.506163172141
(2018-Apr-12.00616317)
0.0001042 TDB
period 1186.773143334484
3.25
5.688e-06
1.557e-08
d
yr
n .3033435682480188 1.4539e-09 deg/d
Q 2.365193868298862 7.5573e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1733  
   data-arc span      11027 days (30.19 yr)  
   first obs. used      1989-09-25  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51417  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:25:50  

Additional Information
 Earth MOID = 1.01271 au 
 Jupiter MOID = 2.68364 au 
 T_jup = 3.662 
[ 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 14.8   n/a MPO347624  
diameter diameter 2.890 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.306   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12516 (1998 HB45)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HB45 = 1989 SP8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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