Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 99 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1949610491646544 4.1072e-08  
a 2.664873396932893 8.4125e-09 au
q 2.14532688357588 1.1056e-07 au
i 13.84752111253251 4.8367e-06 deg
node 41.51414405881997 1.4898e-05 deg
peri 195.7124947401775 1.7766e-05 deg
M 334.9314335566453 9.994e-06 deg
tp 2459111.147166670960
(2020-Sep-18.64716667)
4.4223e-05 TDB
period 1588.961223273497
4.35
7.5241e-06
2.06e-08
d
yr
n .2265631122566643 1.0728e-09 deg/d
Q 3.184419910289907 1.0053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3017  
   data-arc span      38587 days (105.65 yr)  
   first obs. used      1915-01-20  
   last obs. used      2020-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:33:23  

Additional Information
 Earth MOID = 1.13748 au 
 Jupiter MOID = 1.82697 au 
 T_jup = 3.316 
[ 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 9.5   n/a MPO502153 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. 2019-August); Warner et al., 2009 Published Reference List:
[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.]
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

[ show close-approach data ]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-06 01:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin