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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 ]

[ hide orbit diagram ]

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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 113 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751196674243946 3.3192e-08  
a 2.771920581046975 6.5488e-09 au
q 2.286502770767194 9.3179e-08 au
i 10.26998426507489 3.3043e-06 deg
node 195.6551355925568 2.22e-05 deg
peri 154.4573166016606 2.4607e-05 deg
M 311.8302878793971 1.1855e-05 deg
tp 2459226.049127527135
(2021-Jan-11.54912753)		 5.5777e-05 TDB
period 1685.658525557993
4.62		 5.9737e-06
1.636e-08		 d
yr
n .2135663863953889 7.5684e-10 deg/d
Q 3.257338391326756 7.6956e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2938  
   data-arc span      44417 days (121.61 yr)  
   first obs. used      1899-04-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:53:42  

Additional Information
 Earth MOID = 1.28616 au 
 Jupiter MOID = 2.22267 au 
 T_jup = 3.291 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454936.5 (2009-Apr-15.0) TDB
Reference: JPL 113 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733548482293866 3.311e-08  
q 2.291541840801395 9.2566e-08 au
tp 2454177.477725865327
(2007-Mar-17.97772587)		 5.4314e-05 TDB
node 195.812679975672 2.2152e-05 deg
peri 155.3305397653519 2.4598e-05 deg
i 10.27867297729399 3.3071e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2938  
   data-arc span      44417 days (121.61 yr)  
   first obs. used      1899-04-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:53:42  

Additional Information
 Jupiter MOID = 2.22267 au 
 T_jup = 3.291 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.096244947320767E-15 -3.059654786196981E-15 -2.158960716037587E-13 3.013678263720264E-15 -7.622796580216961E-14 1.115337716938733E-15
q -3.059654786196981E-15 8.568536029575156E-15 5.741213998484063E-13 -9.621564647912504E-15 2.100414582157209E-13 -3.047185817095261E-15
tp -2.158960716037587E-13 5.741213998484063E-13 2.95001899353267E-9 -3.705920553441556E-12 6.010571314614594E-10 -2.785614892125288E-12
node 3.013678263720264E-15 -9.621564647912504E-15 -3.705920553441556E-12 4.90703038132962E-10 -4.835643831221405E-10 -9.772614648026157E-12
peri -7.622796580216961E-14 2.100414582157209E-13 6.010571314614594E-10 -4.835643831221405E-10 6.05040420042747E-10 9.052029795124128E-12
i 1.115337716938733E-15 -3.047185817095261E-15 -2.785614892125288E-12 -9.772614648026157E-12 9.052029795124128E-12 1.093687742506789E-11

[ 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. 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

[ 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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