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

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1245280451022119 3.844e-08  
a 3.096867529016976 2.0161e-08 AU
q 2.711220669687975 1.2057e-07 AU
i 3.666939754218205 4.5337e-06 deg
node 105.4145091260231 6.8967e-05 deg
peri 153.989656839981 7.1523e-05 deg
M 292.7913807191504 2.0544e-05 deg
tp 2457372.124931563232
(2015-Dec-15.62493156)
0.00011454 JED
period 1990.592528075996
5.45
1.9438e-05
5.322e-08
d
yr
n .1808506738181909 1.766e-09 deg/d
Q 3.482514388345978 2.2672e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1787  
   data-arc span      33916 days (92.86 yr)  
   first obs. used      1922-02-20  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52939  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:53:01  

Additional Information
 Earth MOID = 1.69805 AU 
 T_jup = 3.208 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.9 mag n/a MPO256874  
diameter diameter 26.53 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
geometric albedo albedo 0.1202   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7

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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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