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3728 IRAS (1983 QF)
Classification: Main-belt Asteroid          SPK-ID: 2003728
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2129608174249037 4.9116e-08  
a 2.650126597164673 1.8561e-08 AU
q 2.085753470753006 1.3582e-07 AU
i 22.58779112703299 7.336e-06 deg
node 167.3850298796821 1.4461e-05 deg
peri 281.2789750515038 2.3156e-05 deg
M 1.936003500326426 1.6571e-05 deg
tp 2456792.025735884042
(2014-May-14.52573588)
7.2519e-05 JED
period 1575.79006506471
4.31
1.6555e-05
4.533e-08
d
yr
n .2284568280897346 2.4001e-09 deg/d
Q 3.214499723576341 2.2513e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1058  
   data-arc span      23856 days (65.31 yr)  
   first obs. used      1948-09-07  
   last obs. used      2013-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49537  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 17:54:35  

Additional Information
 Earth MOID = 1.22229 AU 
 T_jup = 3.251 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9 mag n/a MPO279554  
diameter diameter 19.55 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 8.323 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Warner, B.D. (2009) Minor Planet Bul. 36, 7-13.]
geometric albedo albedo 0.1161   0.023 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12

3728 IRAS (1983 QF)          Discovered 1983-Aug-23 by IRAS
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1983 QF = 1948 RN = 1963 FA = 1972 FH = 1976 GL = 1985 GT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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