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14879 (1991 AL2)
Classification: Main-belt Asteroid          SPK-ID: 2014879
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711242851669026 2.3297e-08  
a 2.526474024433182 8.3778e-09 au
q 2.094132963009306 5.7017e-08 au
i 12.48527930132921 4.9565e-06 deg
node 194.3521324499156 1.7337e-05 deg
peri 297.3791603702951 2.5714e-05 deg
M 128.4942870098686 1.8756e-05 deg
tp 2458676.957429219198
(2019-Jul-12.45742922)
7.6286e-05 TDB
period 1466.799262963445
4.02
7.2959e-06
1.998e-08
d
yr
n .2454323567579893 1.2208e-09 deg/d
Q 2.958815085857058 9.8114e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2166  
   data-arc span      12805 days (35.06 yr)  
   first obs. used      1985-08-16  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:41:19  

Additional Information
 Earth MOID = 1.13895 au 
 Jupiter MOID = 2.16864 au 
 T_jup = 3.400 
[ 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 14.04   n/a E2021B10  
diameter diameter 4.269 km 0.660 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 97.7589 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.267   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

14879 (1991 AL2)          Discovered 1991-Jan-07 by McNaught, R. H. at Siding Spring
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 AL2 = 1985 QM3 = 1998 XK77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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