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1185 Nikko (1927 WC)
Classification: Main-belt Asteroid          SPK-ID: 2001185
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058921436693194 4.229e-08  
a 2.237205024766967 6.7827e-09 au
q 2.00030258886662 9.6124e-08 au
i 5.701381400018112 4.5599e-06 deg
node 71.90696096266373 4.1908e-05 deg
peri 2.069148321254486 4.7421e-05 deg
M 162.989706155732 2.0397e-05 deg
tp 2457047.131056165591
(2015-Jan-24.63105617)
6.8909e-05 JED
period 1222.24172605137
3.35
5.5583e-06
1.522e-08
d
yr
n .2945407543588228 1.3395e-09 deg/d
Q 2.474107460667315 7.5009e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1708  
   data-arc span      31254 days (85.57 yr)  
   first obs. used      1930-09-19  
   last obs. used      2016-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46711  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:32:32  

Additional Information
 Earth MOID = 1.01352 au 
 Jupiter MOID = 2.74436 au 
 T_jup = 3.623 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.09 mag n/a PDS3 (MPC 17261)  
rotation period rot_per 3.79 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Menke, J. (2005) Minor Planet Bul. 32, 85-88.]
[Stephens, R.D. (2005) Minor Planet Bul. 32, 27-28.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]
B-V BV .923 mag .025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=8.98 deg.
U-B UB .514 mag .035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=8.98 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   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)

1185 Nikko (1927 WC)          Discovered 1927-Nov-17 by Oikawa, O. at Tokyo
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1927 WC = 1930 SE1 = 1930 SG1 = 1930 SH1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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