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477 Italia (1901 GR)
Classification: Main-belt Asteroid          SPK-ID: 2000477
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1883612800381251 4.0459e-08  
a 2.414881745620856 7.4655e-09 AU
q 1.96001152887501 9.672e-08 AU
i 5.287593563314829 4.7861e-06 deg
node 10.7057618244723 5.0184e-05 deg
peri 322.0734828084832 5.1493e-05 deg
M 67.13549174023321 1.2341e-05 deg
tp 2456744.881722881657
(2014-Mar-28.38172288)
4.66e-05 JED
period 1370.699422574661
3.75
6.3562e-06
1.74e-08
d
yr
n .2626396378892405 1.2179e-09 deg/d
Q 2.869751962366703 8.8717e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1585  
   data-arc span      41388 days (113.31 yr)  
   first obs. used      1901-08-31  
   last obs. used      2014-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50139  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:45:36  

Additional Information
 Earth MOID = .953833 AU 
 T_jup = 3.487 
[ 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 10.25 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
diameter diameter 22.51 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
rotation period rot_per 19.42 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.2769   0.028 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV .884 mag .031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=5.64, mean=17.12, max.=23.30) deg.
U-B UB .469 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=5.64 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

477 Italia (1901 GR)          Discovered 1901-Aug-23 by Carnera, L. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1901 GR = A905 UK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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