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1917 Cuyo (1968 AA)
Classification: Amor [NEO]          SPK-ID: 2001917
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 464 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5055075483002139 3.2516e-08  
a 2.149076811606577 5.312e-09 au
q 1.062702261462495 7.0339e-08 au
i 23.95916219474627 4.0364e-06 deg
node 188.3070349861022 7.7812e-06 deg
peri 194.5059486527605 8.3342e-06 deg
M 254.6226996944027 7.2288e-06 deg
tp 2459337.337861471561
(2021-May-02.83786147)
2.4165e-05 TDB
period 1150.737680488108
3.15
4.2665e-06
1.168e-08
d
yr
n .3128428017124625 1.1599e-09 deg/d
Q 3.235451361750658 7.9973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2345  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      24229 days (66.34 yr)  
   first obs. used      1954-05-06  
   last obs. used      2020-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-08 06:52:39  

Additional Information
 Earth MOID = .0727329 au 
 Jupiter MOID = 2.24402 au 
 T_jup = 3.435 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457094.5 (2015-Mar-13.0) TDB
Reference: JPL 464 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5039805544172336 3.2436e-08  
q 1.06671663054655 7.0103e-08 au
tp 2457034.601324827238
(2015-Jan-12.10132483)
1.7668e-05 TDB
node 188.3356775444756 7.785e-06 deg
peri 194.4151799588879 8.347e-06 deg
i 23.93110249041759 4.0305e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2345  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      24229 days (66.34 yr)  
   first obs. used      1954-05-06  
   last obs. used      2020-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-08 06:52:39  

Additional Information
 Jupiter MOID = 2.24402 au 
 T_jup = 3.435 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.052065302265303E-15 -2.272313963833266E-15 -1.045248281697041E-13 -3.748440237564653E-15 1.456179296246739E-14 -1.18763934033453E-15
q -2.272313963833266E-15 4.914466989597573E-15 2.55485127661521E-13 8.436240077448931E-15 -2.66248676289212E-14 3.5318317723301E-15
tp -1.045248281697041E-13 2.55485127661521E-13 3.121714052337949E-10 -4.773633921478515E-12 6.217304508620213E-11 8.388284577502036E-12
node -3.748440237564653E-15 8.436240077448931E-15 -4.773633921478515E-12 6.060663910607286E-11 -5.620871301295595E-11 9.837541766053866E-12
peri 1.456179296246739E-14 -2.66248676289212E-14 6.217304508620213E-11 -5.620871301295595E-11 6.967296558163003E-11 -7.495778498038614E-12
i -1.18763934033453E-15 3.5318317723301E-15 8.388284577502036E-12 9.837541766053866E-12 -7.495778498038614E-12 1.624470948774925E-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 14.3   n/a MPO473790  
diameter diameter 5.7 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
rotation period rot_per 2.6890 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Velichko, F.P.; Lupishko, D.F.; Shevchenko, V.G. (1989) Astron. Tsirk. 1541, 35-36.]
[Hoffmann, M.; Rebhan, H.; Neukum, G.; Geyer, E.H. (1993) Acta Astronomica 43, 61-67.]
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 213-224.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 41-53.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 335-344.]
geometric albedo albedo 0.195   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B Sl   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)

1917 Cuyo (1968 AA)          Discovered 1968-Jan-01 by Cesco, C. U. and Samuel, A. at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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