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99 Dike (A868 KA)
Classification: Main-belt Asteroid          SPK-ID: 2000099
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1950987372771205 2.9728e-08  
a 2.665303715303415 8.0405e-09 au
q 2.145306325987701 8.0776e-08 au
i 13.84663297953428 7.181e-07 deg
node 41.51135717659404 4.7482e-06 deg
peri 195.7448452639 6.9232e-06 deg
M 20.21900474303261 3.5464e-06 deg
tp 2459111.236120609707
(2020-Sep-18.73612061)
1.5541e-05 TDB
period 1589.346112180872
4.35
7.1919e-06
1.969e-08
d
yr
n .2265082459012119 1.025e-09 deg/d
Q 3.185301104619129 9.6091e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3062  
   data-arc span      38778 days (106.17 yr)  
   first obs. used      1915-01-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36785  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:51:34  

Additional Information
 Earth MOID = 1.13617 au 
 Jupiter MOID = 1.82509 au 
 T_jup = 3.315 
[ 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 9.56   n/a E2021B10 IRAS observations used: 3
diameter diameter 67.354 km 0.416 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.127 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2011) Minor Planet Bull. 38, 183-185.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.065   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.703   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.84, mean=7.96, max.=15.22) deg.
U-B UB 0.322   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.84, mean=7.96, max.=15.22) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Xk   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)

99 Dike (A868 KA)          Discovered 1868-May-28 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A868 KA = 1935 UC = 1935 YL = 1939 UT = 1948 UE = 1948 WC = 1961 XJ = 1974 VB = A915 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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