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17847 (1998 HQ115)
Classification: Main-belt Asteroid          SPK-ID: 2017847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2114237524490732 3.1059e-08  
a 2.646272122108416 1.1326e-08 au
q 2.086787340050883 8.2782e-08 au
i 10.51980883844031 3.2409e-06 deg
node 129.5231207817504 2.3225e-05 deg
peri 308.6150638684691 2.5504e-05 deg
M 211.5784921037922 1.2688e-05 deg
tp 2459848.752974281226
(2022-Sep-26.25297428)
5.7904e-05 TDB
period 1572.353455029168
4.30
1.0095e-05
2.764e-08
d
yr
n .2289561541322284 1.4699e-09 deg/d
Q 3.20575690416595 1.3721e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      14817 days (40.57 yr)  
   first obs. used      1980-01-22  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53091  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:15:10  

Additional Information
 Earth MOID = 1.12009 au 
 Jupiter MOID = 2.08919 au 
 T_jup = 3.337 
[ 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 14.1   n/a MPO431704  
diameter diameter 5.383 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 289.840 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.171   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17847 (1998 HQ115)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HQ115 = 1980 BN = 1993 BN5 = 1993 DK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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