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44 Nysa
Classification: Main-belt Asteroid          SPK-ID: 2000044
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 99 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1487776274285377 2.9489e-08  
a 2.423694989060083 3.5242e-09 AU
q 2.063103398977288 7.1143e-08 AU
i 3.706792693721379 3.5276e-06 deg
node 131.5585092248581 5.078e-05 deg
peri 343.391004025991 5.1628e-05 deg
M 24.59181543525418 9.862e-06 deg
tp 2456906.353654999259
(2014-Sep-05.85365500)
3.7728e-05 JED
period 1378.209928807418
3.77
3.006e-06
8.23e-09
d
yr
n .2612083924772712 5.6972e-10 deg/d
Q 2.784286579142878 4.0485e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2125  
   data-arc span      55028 days (150.66 yr)  
   first obs. used      1864-03-02  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60105  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:40:39  

Additional Information
 Earth MOID = 1.0798 AU 
 T_jup = 3.494 
[ 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 7.03 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
magnitude slope G 0.46   n/a PDS3 (MPC 17257) Fit
diameter diameter 70.64 km 4.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
rotation period rot_per 6.422 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Bianchi, E.; Padova, E. (1920) Mem. Soc. Astron. Ital. 1, 56-65.]
[Padova, E. (1921) Mem. Soc. Astron. Ital. 2, 82.]
[Shatzel, A.V. (1954) Astrophys. J. 120, 547-550.]
[Groeneveld, I.; Kuiper, G.P. (1954) Astrophys. J. 120, 529-546.]
[Cailliate, C. (1956) Publ. Observ. Lyon 3, fasc. 28.]
[Chang, Y.C.; Chang, C.-s. (1962) Acta Astron. Sin. 10, 101-111.]
[Gehrels, T.; Owings, D. (1962) Astrophys. J. 135, 906-924.]
[Yang, X.-y.; Zhang, Y.-y.; Li, X.-q. (1965) Acta Astron. Sin. 13, 66-74.]
[Zappala, V.; van Houten-Groeneveld, I. (1979) Icarus 40, 289-296.]
[Birch, P.V.; Tedesco, E.F.; Taylor, R.C.; Binzel, R.P.; et al. (1983) Icarus 54, 1-12.]
[Magnusson, P. (1983) in Asteroids, Comets, Meteors. C.-I. Lagerkvist, H. Rickman, eds. Uppsala, pp. 77-85.]
[Taylor, R.C.; Tedesco, E.F. (1983) Icarus 54, 13-22.]
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Magnusson, P. (1986) Icarus 68, 1-39.]
[Lagerkvist, C.-I.; Williams, I.P. (1987) Astron. Astrophys. Suppl. Ser. 68, 295-315.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1988) Astron. Astrophys. Suppl. Ser. 73, 395-405.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1989) Astron. Astrophys. Suppl. Ser. 78, 519-532.]
[Harris, A.W.; Young, J.W.; Contreiras, L.; Dockweiler, T.; et al. (1989) Icarus 81, 365-374.]
[De Angelis, G. (1993) Planet. Space Sci. 41, 285-290.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Astron. Astrophys. 383, L19-L22.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Rosenbush, V.K.; Shevchenko, V.G.; Kiselev, N.N.; Sergeev, A.V.; et al. (2009) Icarus 201, 655-665.]
geometric albedo albedo 0.5458   0.067 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
B-V BV .703 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=19; phase (min.=4.95, mean=15.61, max.=27.78) deg.
U-B UB .245 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=18; phase (min.=5.27, mean=17.16, max.=27.78) deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xc   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)

44 Nysa          Discovered 1857-May-27 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 CE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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