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444 Gyptis (1899 EL)
Classification: Main-belt Asteroid          SPK-ID: 2000444
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1756177797713156 4.5093e-08  
a 2.768828899980103 5.2107e-09 AU
q 2.282573315998943 1.2477e-07 AU
i 10.27815364316561 4.0512e-06 deg
node 195.7261843601877 3.265e-05 deg
peri 155.142440969331 3.5761e-05 deg
M 200.6283825769027 1.59e-05 deg
tp 2457545.491101329556
(2016-Jun-05.99110133)
7.4964e-05 JED
period 1682.839145483699
4.61
4.7505e-06
1.301e-08
d
yr
n .2139241893475952 6.0388e-10 deg/d
Q 3.255084483961263 6.1258e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1386  
   data-arc span      42008 days (115.01 yr)  
   first obs. used      1899-04-01  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63252  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:35:19  

Additional Information
 Earth MOID = 1.28083 AU 
 T_jup = 3.292 
[ 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 7.83 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
magnitude slope G 0.22   n/a PDS3 (MPC 17258) Fit
diameter diameter 163.08 km 10.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
rotation period rot_per 6.214 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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]
geometric albedo albedo 0.0490   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
B-V BV .676 mag .033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=6; phase (min.=4.98, mean=8.90, max.=14.48) deg.
U-B UB .293 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 (1899 EL)          Discovered 1899-Mar-31 by Coggia, J. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1899 EL = 1950 HB1 = A899 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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