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91581 (1999 SW15)
Classification: Main-belt Asteroid          SPK-ID: 2091581
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08902044549533768 6.0855e-08  
a 3.052961828140884 2.6752e-08 au
q 2.781185806119522 1.8304e-07 au
i 7.996667848338948 6.7706e-06 deg
node 294.797291322384 4.64e-05 deg
peri 98.76853311533291 6.3467e-05 deg
M 297.772181617333 4.259e-05 deg
tp 2459337.292617349969
(2021-May-02.79261735)
0.00023144 TDB
period 1948.41062079979
5.33
2.561e-05
7.012e-08
d
yr
n .1847659811319577 2.4285e-09 deg/d
Q 3.324737850162246 2.9133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      7633 days (20.90 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:18:15  

Additional Information
 Earth MOID = 1.80219 au 
 Jupiter MOID = 2.06687 au 
 T_jup = 3.215 
[ 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 14.6   n/a MPO359384  
diameter diameter 5.973 km 0.880 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.086   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91581 (1999 SW15)          Discovered 1999-Sep-30 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 SW15 = 2000 YC54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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