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1098 Hakone (1928 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2001098
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.

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1185702904949421 3.6529e-08  
a 2.687864658016681 9.3698e-09 au
q 2.369163764704555 9.6656e-08 au
i 13.37805241602007 4.6793e-06 deg
node 328.9954637764272 1.7408e-05 deg
peri 80.70853933829581 2.7242e-05 deg
M 148.0666535646397 2.0466e-05 deg
tp 2457938.490407293704
9.0706e-05 TDB
period 1609.568715417915
n .2236623988473385 1.1695e-09 deg/d
Q 3.006565551328808 1.0481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2348  
   data-arc span      41116 days (112.57 yr)  
   first obs. used      1906-10-13  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39379  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:18:56  

Additional Information
 Earth MOID = 1.42114 au 
 Jupiter MOID = 2.38518 au 
 T_jup = 3.324 
[ 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 10.5   n/a MPO448922  
diameter diameter 26.684 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 7.142 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site,]
[LeCrone, C.; Addleman, D.; Butler, T.; Hudson, E.; et al. (2005) Minor Planet Bull. 32, 46-48.]
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.206   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B Xe   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1098 Hakone (1928 RJ)          Discovered 1928-Sep-05 by Oikawa, O. at Tokyo
Independent discovery Sept. 9 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1928 RJ = 1926 EC = 1950 QH1 = 1952 BE1 = A906 RD = A917 DD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Dec-09 16:07 UT
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