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1665 Gaby (1930 DQ)
Classification: Main-belt Asteroid          SPK-ID: 2001665
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2075092522880804 3.4837e-08  
a 2.413723932144223 6.3845e-09 au
q 1.91285388375513 8.2876e-08 au
i 10.83545863926315 3.8025e-06 deg
node 91.53944440173078 2.0037e-05 deg
peri 5.769465929422302 2.2117e-05 deg
M 68.82842695256565 9.1319e-06 deg
tp 2458738.624321894541
(2019-Sep-12.12432189)
3.4377e-05 TDB
period 1369.713769325818
3.75
5.4345e-06
1.488e-08
d
yr
n .2628286347571686 1.0428e-09 deg/d
Q 2.914593980533316 7.7093e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3040  
   data-arc span      32983 days (90.30 yr)  
   first obs. used      1930-02-27  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34116  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:34:38  

Additional Information
 Earth MOID = .929968 au 
 Jupiter MOID = 2.27519 au 
 T_jup = 3.465 
[ 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 11.8   n/a MPO502169  
diameter diameter 10.746 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 66. h n/a LCDB (Rev. 2019-August); 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. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.278   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.848   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.24 deg.
U-B UB 0.481   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.24 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1665 Gaby (1930 DQ)          Discovered 1930-Feb-27 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1930 DQ = 1941 BC = 1949 HS = 1951 WQ = 1957 KF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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