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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1746065241202889 1.4271e-08  
a 2.770523466662441 4.7359e-09 au
q 2.286771994154819 4.0887e-08 au
i 10.27275609460677 3.1983e-07 deg
node 195.6171567391361 1.5521e-06 deg
peri 154.4832699922692 3.4306e-06 deg
M 354.5389093367123 3.7364e-06 deg
tp 2459226.051597771932
(2021-Jan-11.55159777)
1.7491e-05 TDB
period 1684.384267731172
4.61
4.3189e-06
1.182e-08
d
yr
n .2137279520455935 5.4801e-10 deg/d
Q 3.254274939170063 5.5628e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3165  
   data-arc span      44481 days (121.78 yr)  
   first obs. used      1899-04-08  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48049  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:24:20  

Additional Information
 Earth MOID = 1.28472 au 
 Jupiter MOID = 2.22645 au 
 T_jup = 3.292 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.03   n/a E2021B10 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. 2020-October); 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]
[Carbognani, A.; Cellino, A.; Caminiti, S. (2019) Planet. Space Sci. 169, 15-34.]
[Pilcher, F. (2019) Minor Planet Bull. 46, 445-448.]
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

Alternate Designations
 A899 FA = 1950 HB1 = A899 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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