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1100 Arnica (1928 SD)
Classification: Main-belt Asteroid          SPK-ID: 2001100
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06970594136078917 3.6075e-08  
a 2.896928368554109 1.043e-08 au
q 2.694995249569269 1.0624e-07 au
i 1.03475763440401 3.1715e-06 deg
node 304.0966500092961 0.00024966 deg
peri 24.11561134265131 0.00025183 deg
M 247.0546883084504 3.4592e-05 deg
tp 2459565.529040210231
(2021-Dec-17.02904021)
0.0001735 TDB
period 1800.964125285618
4.93
9.7263e-06
2.663e-08
d
yr
n .1998929323164097 1.0795e-09 deg/d
Q 3.098861487538949 1.1157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3219  
   data-arc span      37227 days (101.92 yr)  
   first obs. used      1918-09-16  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40673  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:22:32  

Additional Information
 Earth MOID = 1.6835 au 
 Jupiter MOID = 2.13748 au 
 T_jup = 3.285 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456645.5 (2013-Dec-19.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06634552013428247 3.5844e-08  
q 2.710126052472106 1.0532e-07 au
tp 2455958.614575216442
(2012-Feb-01.11457522)
0.00018139 TDB
node 304.1676650397509 0.00024941 deg
peri 23.88907867937469 0.00025183 deg
i 1.034991836600227 3.1683e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3219  
   data-arc span      37227 days (101.92 yr)  
   first obs. used      1918-09-16  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40673  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:22:32  

Additional Information
 Jupiter MOID = 2.13748 au 
 T_jup = 3.285 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.284771583130229E-15 -3.758724884607544E-15 3.155040563653501E-12 -4.554374585628931E-15 5.981444832184822E-13 6.721049809873324E-17
q -3.758724884607544E-15 1.109127451156273E-14 -9.085484011385232E-12 9.553115541123783E-15 -1.713745290591199E-12 -2.206800928110021E-16
tp 3.155040563653501E-12 -9.085484011385232E-12 3.290151515649447E-8 -2.662898822768845E-11 6.346352103975871E-9 -1.360581723943032E-13
node -4.554374585628931E-15 9.553115541123783E-15 -2.662898822768845E-11 6.220674406139963E-8 -6.220256010475939E-8 1.520052453154141E-10
peri 5.981444832184822E-13 -1.713745290591199E-12 6.346352103975871E-9 -6.220256010475939E-8 6.341922796996812E-8 -1.52016479733618E-10
i 6.721049809873324E-17 -2.206800928110021E-16 -1.360581723943032E-13 1.520052453154141E-10 -1.52016479733618E-10 1.003780979344105E-11

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 10.9   n/a MPO439073  
diameter diameter 16.894 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.535 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Slivan, S.M.; Binzel, R.P.; Boroumand, S.C.; Pan M.W.; et al. (2008) Icarus 195, 226-276.]
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.246   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1100 Arnica (1928 SD)          Discovered 1928-Sep-22 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1928 SD = 1950 BU = 1976 MK = 1979 HE = A904 XA = A918 RD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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