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37 Fides
Classification: Main-belt Asteroid          SPK-ID: 2000037
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 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735294622792786 2.8942e-08  
a 2.642693231717031 4.6584e-09 AU
q 2.184108096248085 7.6646e-08 AU
i 3.072750339100682 3.6312e-06 deg
node 7.297848544502529 6.8322e-05 deg
peri 62.94263821233893 6.909e-05 deg
M 334.3711779175696 9.4963e-06 deg
tp 2457112.210681409788
(2015-Mar-30.71068141)
4.1448e-05 JED
period 1569.164793378993
4.30
4.149e-06
1.136e-08
d
yr
n .2294214103700267 6.0661e-10 deg/d
Q 3.101278367185976 5.4667e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1783  
   data-arc span      58069 days (158.98 yr)  
   first obs. used      1855-10-07  
   last obs. used      2014-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58313  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:44:15  

Additional Information
 Earth MOID = 1.2001 AU 
 T_jup = 3.371 
[ 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 7.29 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
magnitude slope G 0.24   n/a PDS3 (MPC 17257) Fit
diameter diameter 108.35 km 1.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
rotation period rot_per 7.3335 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Zappla, V.; Di Martino, M.; Scaltriti, F.; Burchi, R.; Milano, L.; et al. (1983) Astron. Astrophys. 123, 326-330. (Lead author's name spelled incorrectly in ADS entry)]
[Zeigler, K.W.; Florence, W.B. (1985) Minor Planet Bul. 12, 21-23.]
[Magnusson, P. (1986) Icarus 68, 1-39.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.1826   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
B-V BV .843 mag .016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=9.22, mean=15.70, max.=24.73) deg.
U-B UB .414 mag .025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=9.22, mean=16.14, max.=24.73) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
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)

37 Fides          Discovered 1855-Oct-05 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1925 WH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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