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19468 (1998 HO45)
Classification: Main-belt Asteroid          SPK-ID: 2019468
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .130368956855733 3.9197e-08  
a 2.549649915491487 8.1288e-09 au
q 2.217254715661555 9.9944e-08 au
i 4.347643539266929 4.4996e-06 deg
node 329.6966921410361 3.6862e-05 deg
peri 324.2948635945538 3.9419e-05 deg
M 129.4531555765317 1.2695e-05 deg
tp 2458665.776344942909
(2019-Jul-01.27634494)
5.2225e-05 TDB
period 1487.028376892272
4.07
7.1114e-06
1.947e-08
d
yr
n .242093564315404 1.1578e-09 deg/d
Q 2.88204511532142 9.1885e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2018  
   data-arc span      9311 days (25.49 yr)  
   first obs. used      1995-08-17  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46647  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:54:27  

Additional Information
 Earth MOID = 1.20107 au 
 Jupiter MOID = 2.30424 au 
 T_jup = 3.425 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.99   n/a E2021B10  
diameter diameter 4.464 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.293   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19468 (1998 HO45)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HO45 = 1995 QM4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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