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444 Gyptis (A899 FA)
Classification: Main-belt Asteroid          SPK-ID: 2000444
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 111 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751196682078688 3.3221e-08  
a 2.771920581287315 6.577e-09 au
q 2.286502768793718 9.3239e-08 au
i 10.26998420410715 3.3081e-06 deg
node 195.6551350305248 2.2239e-05 deg
peri 154.4573175476064 2.4658e-05 deg
M 311.8302872414765 1.1944e-05 deg
tp 2459226.049130543459
(2021-Jan-11.54913054)
5.62e-05 TDB
period 1685.658525777227
4.62
5.9994e-06
1.643e-08
d
yr
n .2135663863676129 7.601e-10 deg/d
Q 3.257338393780913 7.7287e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2916  
   data-arc span      44399 days (121.56 yr)  
   first obs. used      1899-04-08  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47759  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:29  

Additional Information
 Earth MOID = 1.28616 au 
 Jupiter MOID = 2.22267 au 
 T_jup = 3.291 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.1   n/a MPO473767 IRAS observations used: 13
magnitude slope G 0.22   n/a PDS3 (MPC 17258) Fit
diameter diameter 159.331 km 0.490 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.214 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.; Scaltriti, F.; Zappala, V. (1984) Icarus 57, 251-258.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, N.M.; Krugly, Yu.N.; et al. (2005) Abstr. IAU Symp. 229, p. 133.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, M.; Krugly, Y.N.; et al. (2008) Icarus 196, 601-611.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2019) Minor Planet Bull. 46-4, in press.]
geometric albedo albedo 0.051   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.676   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=4.98, mean=8.90, max.=14.48) deg.
U-B UB 0.293   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=4.98, mean=8.90, max.=14.48) 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 C   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)

444 Gyptis (A899 FA)          Discovered 1899-Mar-31 by Coggia, J. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A899 FA = 1950 HB1 = A899 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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