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249899 (2001 SL12)
Classification: Main-belt Asteroid          SPK-ID: 2249899
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08996710856640298 5.9662e-08  
a 2.691310226126249 2.239e-08 au
q 2.449180826826479 1.5783e-07 au
i 5.026059604090665 5.4792e-06 deg
node 268.4091197079783 7.3571e-05 deg
peri 31.40766436232772 8.2222e-05 deg
M 133.1823221229879 3.9316e-05 deg
tp 2458403.893265585032
(2018-Oct-12.39326558)
0.00017299 TDB
period 1612.664661238226
4.42
2.0125e-05
5.51e-08
d
yr
n .2232330184029624 2.7858e-09 deg/d
Q 2.93343962542602 2.4405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      8098 days (22.17 yr)  
   first obs. used      1997-11-23  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57688  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:17  

Additional Information
 Earth MOID = 1.43509 au 
 Jupiter MOID = 2.22909 au 
 T_jup = 3.360 
[ 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 16.3   n/a MPO503177  
diameter diameter 2.751 km 0.445 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249899 (2001 SL12)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 2001 SL12 = 2005 NN42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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