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17919 Licandro (1999 GC8)
Classification: Main-belt Asteroid          SPK-ID: 2017919
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2538059772030056 3.5437e-08  
a 2.236259475852391 6.3742e-09 au
q 1.668683454304194 7.8691e-08 au
i 4.927824503163932 3.6551e-06 deg
node 225.7794105623711 4.7791e-05 deg
peri 97.36151092940844 4.8297e-05 deg
M 2.529769370118812 8.4218e-06 deg
tp 2458991.916584287707
(2020-May-22.41658429)
2.8556e-05 TDB
period 1221.466941976768
3.34
5.2225e-06
1.43e-08
d
yr
n .2947275833903387 1.2601e-09 deg/d
Q 2.803835497400588 7.992e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1761  
   data-arc span      24477 days (67.01 yr)  
   first obs. used      1953-09-16  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4984  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:46:55  

Additional Information
 Earth MOID = .665709 au 
 Jupiter MOID = 2.55606 au 
 T_jup = 3.590 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456580.5 (2013-Oct-15.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2537250167520272 3.5381e-08  
q 1.668736252143646 7.8563e-08 au
tp 2456547.559701980004
(2013-Sep-12.05970198)
2.4856e-05 TDB
node 225.994192324951 4.7819e-05 deg
peri 96.89377983002623 4.8324e-05 deg
i 4.926076209747384 3.6529e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1761  
   data-arc span      24477 days (67.01 yr)  
   first obs. used      1953-09-16  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4984  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:46:55  

Additional Information
 Jupiter MOID = 2.55606 au 
 T_jup = 3.590 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.251811978724534E-15 -2.774716171647742E-15 3.644006256814024E-14 1.443894921922582E-14 9.121883117307286E-15 -1.055748082053795E-15
q -2.774716171647742E-15 6.172147316038955E-15 -5.857005069693719E-14 -3.414687788169075E-14 -1.326049214918494E-14 2.304590892304706E-15
tp 3.644006256814024E-14 -5.857005069693719E-14 6.178130704162564E-10 -1.36623616584337E-11 1.925856581512729E-10 1.370988664500004E-13
node 1.443894921922582E-14 -3.414687788169075E-14 -1.36623616584337E-11 2.286670807795407E-9 -2.280919263427549E-9 -2.458865659269941E-11
peri 9.121883117307286E-15 -1.326049214918494E-14 1.925856581512729E-10 -2.280919263427549E-9 2.335161872780628E-9 2.453743418312499E-11
i -1.055748082053795E-15 2.304590892304706E-15 1.370988664500004E-13 -2.458865659269941E-11 2.453743418312499E-11 1.334381236728431E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO365467  
diameter diameter 3.049 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.897 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.264   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17919 Licandro           Discovered 1999 Apr. 9 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Javier Licandro (b. 1966), a Uruguayan astronomer at the Isaac Newton Telescope at La Palma, works on the physical properties of minor bodies and transneptunian objects.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1999 GC8 = 1973 RC = 1996 KV7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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