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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .213078801413316 3.869e-08  
a 2.64906547317205 1.4404e-08 au
q 2.084605777283151 1.0218e-07 au
i 22.59641031387125 7.1913e-06 deg
node 167.3735974480152 1.222e-05 deg
peri 281.0970467166825 2.1173e-05 deg
M 139.2168275996227 1.6799e-05 deg
tp 2456791.486811562719
(2014-May-13.98681156)
7.2085e-05 JED
period 1574.843728431685
4.31
1.2844e-05
3.516e-08
d
yr
n .2285941096889071 1.8644e-09 deg/d
Q 3.213525169060949 1.7473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1249  
   data-arc span      24386 days (66.77 yr)  
   first obs. used      1948-09-07  
   last obs. used      2015-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48554  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:46:43  

Additional Information
 Earth MOID = 1.22177 au 
 Jupiter MOID = 2.25273 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 LCDB (Rev. 2015-December); Warner et al., 2009 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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