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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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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