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15279 (1991 PY7)
Classification: Main-belt Asteroid          SPK-ID: 2015279
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09537291471289537 4.0736e-08  
a 2.175893882978285 6.1389e-09 au
q 1.968372541252687 8.8412e-08 au
i 1.932057150071255 3.8496e-06 deg
node 84.6119980634208 0.00011696 deg
peri 342.1918653618051 0.00011863 deg
M 258.7261031795167 1.9498e-05 deg
tp 2459330.299516107960
(2021-Apr-25.79951611)
6.3812e-05 TDB
period 1172.343807499782
3.21
4.9614e-06
1.358e-08
d
yr
n .3070771540711763 1.2995e-09 deg/d
Q 2.383415224703884 6.7244e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      15421 days (42.22 yr)  
   first obs. used      1977-02-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51144  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:19:17  

Additional Information
 Earth MOID = .982243 au 
 Jupiter MOID = 2.82465 au 
 T_jup = 3.678 
[ 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 15.0   n/a MPO384887  
diameter diameter 2.283 km 0.552 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.145 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.407   0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15279 (1991 PY7)          Discovered 1991-Aug-06 by Elst, E. W. at La Silla
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PY7 = 1977 DQ10 = 1998 XB76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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