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2189 Zaragoza (1975 QK)
Classification: Main-belt Asteroid          SPK-ID: 2002189
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2257618081249831 1.5366e-08  
a 2.403515692566473 7.0572e-09 au
q 1.860893643955895 3.5805e-08 au
i 13.92167760785348 4.4288e-07 deg
node 128.79631409352 2.5292e-06 deg
peri 217.4904434676927 2.8486e-06 deg
M 89.13528675418524 2.6932e-06 deg
tp 2459059.510759300822
(2020-Jul-29.01075930)
9.8089e-06 TDB
period 1361.033672178182
3.73
5.9944e-06
1.641e-08
d
yr
n .2645048446331679 1.165e-09 deg/d
Q 2.94613774117705 8.6504e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2915  
   data-arc span      24129 days (66.06 yr)  
   first obs. used      1955-03-22  
   last obs. used      2021-04-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39918  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:25:41  

Additional Information
 Earth MOID = .869395 au 
 Jupiter MOID = 2.48727 au 
 T_jup = 3.450 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO384769  
diameter diameter 6.255 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.92815 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Higgins, D. (2011) Minor Planet Bull. 38, 41-46.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Aznar, A.M. (2017) Minor Planet Bull. 44, 60-63.]
geometric albedo albedo 0.344   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   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)

2189 Zaragoza           Discovered 1975 Aug. 30 at the El Leoncito Station of the Felix Aguilar Observatory.
Named in memory of Aldo Zaragoza (1924-1979), a member of the staff of the Felix Aguilar Observatory for over 20 years. As head of the Calculations Office he was responsible for the analysis and reduction of the plates taken at El Leoncito, and he calculated orbits for the comets and minor planets observed.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5524Last Updated: 2006-03-21

Alternate Designations
 1975 QK = 1976 UE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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