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17479 (1991 PV9)
Classification: Main-belt Asteroid          SPK-ID: 2017479
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770691969373027 3.7205e-08  
a 2.595214495383306 1.2426e-08 au
q 2.135681948805737 9.5696e-08 au
i 14.15095062808843 4.5723e-06 deg
node 169.2802062959523 1.6635e-05 deg
peri 109.0877935316408 2.1366e-05 deg
M 339.0783301815319 1.6373e-05 deg
tp 2459089.246688626953
(2020-Aug-27.74668863)
6.9793e-05 TDB
period 1527.067781057375
4.18
1.0968e-05
3.003e-08
d
yr
n .2357459206890792 1.6932e-09 deg/d
Q 3.054747041960876 1.4627e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1760  
   data-arc span      11849 days (32.44 yr)  
   first obs. used      1987-08-26  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47947  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:05:13  

Additional Information
 Earth MOID = 1.16792 au 
 Jupiter MOID = 2.26403 au 
 T_jup = 3.353 
[ 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 13.4   n/a MPO473999  
diameter diameter 6.352 km 0.429 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.146 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. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.230   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17479 (1991 PV9)          Discovered 1991-Aug-13 by Helin, E. F. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PV9 = 1987 QV9 = 1999 DO6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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