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41 Daphne
Classification: Main-belt Asteroid          SPK-ID: 2000041
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 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2752844434868511 1.8038e-08  
a 2.760265228757319 5.3585e-09 AU
q 2.000407151382755 5.0243e-08 AU
i 15.79528719965904 1.9958e-06 deg
node 178.0878516679413 8.9099e-06 deg
peri 45.98665848388109 9.9347e-06 deg
M 150.3141650526076 5.3955e-06 deg
tp 2456301.105750999352
(2013-Jan-08.60575100)
2.3512e-05 JED
period 1675.037941714365
4.59
4.8777e-06
1.335e-08
d
yr
n .2149205048045346 6.2584e-10 deg/d
Q 3.520123306131884 6.8337e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1655  
   data-arc span      54107 days (148.14 yr)  
   first obs. used      1866-07-13  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50483  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:22  

Additional Information
 Earth MOID = 1.02789 AU 
 T_jup = 3.233 
[ 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 7.12 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
magnitude slope G 0.10   n/a PDS3 (MPC 17257) Fit
diameter diameter 174.00 km 11.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 5.988 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Scaltriti, F.; Zappala, V. (1977) Astron. Astrophys. 56, 7-11.]
[Magnusson, P. (1986) Icarus 68, 1-39.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Astron. Astrophys. 383, L19-L22.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.0828   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
B-V BV .726 mag .008 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=12; phase (min.=5.79, mean=17.09, max.=25.76) deg.
U-B UB .363 mag .017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=13.37, mean=16.59, max.=19.71) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

41 Daphne          Discovered 1856-May-22 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1949 TG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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