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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1253725578908516 2.9185e-08  
a 3.096001001739313 1.2399e-08 au
q 2.707847436918617 9.2632e-08 au
i 3.667304284550464 3.4084e-06 deg
node 105.3959858529145 5.8108e-05 deg
peri 154.6330325338215 6.0179e-05 deg
M 293.7603569732216 1.6467e-05 deg
tp 2459366.613335570184
(2021-Jun-01.11333557)
9.1344e-05 TDB
period 1989.757111945543
5.45
1.1953e-05
3.273e-08
d
yr
n .1809266054830177 1.0869e-09 deg/d
Q 3.48415456656001 1.3954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3361  
   data-arc span      35862 days (98.18 yr)  
   first obs. used      1922-02-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45164  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:28:22  

Additional Information
 Earth MOID = 1.69304 au 
 Jupiter MOID = 1.57942 au 
 T_jup = 3.208 
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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-August); 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

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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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