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4817 Gliba (1984 DC1)
Classification: Main-belt Asteroid          SPK-ID: 2004817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .209644080543603 1.2123e-08  
a 2.345955368297457 6.2998e-09 au
q 1.854139712114407 2.7529e-08 au
i 2.160521436344852 6.7473e-07 deg
node 163.3341904659019 1.7894e-05 deg
peri 252.6085835944279 1.7297e-05 deg
M 172.9462364890698 4.7683e-06 deg
tp 2458569.997722109400
(2019-Mar-27.49772211)
1.6298e-05 TDB
period 1312.435729441047
3.59
5.2866e-06
1.447e-08
d
yr
n .2742991461786249 1.1049e-09 deg/d
Q 2.837771024480506 7.6205e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2688  
   data-arc span      22909 days (62.72 yr)  
   first obs. used      1957-10-02  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45775  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:49:11  

Additional Information
 Earth MOID = .866498 au 
 Jupiter MOID = 2.5188 au 
 T_jup = 3.530 
[ 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 13.74   n/a E2021B10  
diameter diameter 3.792 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 23.66 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.446   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Sl   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)

4817 Gliba           Discovered 1984 Feb. 27 by H. Debehogne at the European Southern Observatory.
George Gliba (b. 1948) is co-founder of the Chagrin Valley Astronomical Society. He has worked at the NASA/Goddard Space Flight Center since 1979 on projects such as IUE, GRO and the Hubble Space Telescope. He is a life-long meteor observer, telescope maker and has seen over 100 comets visually.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-06-02Last Updated: 2015-06-04

Alternate Designations
 1984 DC1 = 1957 TO = 1968 UQ1 = 1979 YH8 = 1982 PG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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