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JPL Small-Body Database Browser
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1684 Iguassu (1951 QE)
Classification: Main-belt Asteroid          SPK-ID: 2001684
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1252866562007806 3.2333e-08  
a 3.097332439877138 1.3673e-08 au
q 2.709278015342726 1.0025e-07 au
i 3.66715393525892 3.6748e-06 deg
node 105.3946596610783 6.0081e-05 deg
peri 154.4332701122362 6.2066e-05 deg
M 221.623103616188 1.6547e-05 deg
tp 2459365.816793966122
(2021-May-31.31679397)
9.2395e-05 TDB
period 1991.040795304575
5.45
1.3184e-05
3.61e-08
d
yr
n .1808099567065525 1.1972e-09 deg/d
Q 3.48538686441155 1.5386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2986  
   data-arc span      35719 days (97.79 yr)  
   first obs. used      1922-02-20  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47402  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:04:16  

Additional Information
 Earth MOID = 1.69415 au 
 Jupiter MOID = 1.57736 au 
 T_jup = 3.208 
[ 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 11.0   n/a MPO384763  
diameter diameter 30.210 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.4156 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Skiff, B.A. (2018) Posting on CALL web site: http://www.minorplanet.info/call.html]
geometric albedo albedo 0.093   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1684 Iguassu (1951 QE)          Discovered 1951-Aug-23 by Itzigsohn, M. at La Plata
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1951 QE = 1934 LN = 1935 SK1 = 1939 HK = 1949 DE = 1950 JT = 1965 AA1 = A922 DA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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