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101179 (1998 SA9)
Classification: Main-belt Asteroid          SPK-ID: 2101179
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 .1826300624398684 4.4371e-08  
a 3.030470225835713 2.0583e-08 au
q 2.477015259269175 1.3865e-07 au
i .9315140016012793 5.3705e-06 deg
node 61.76327585597408 0.00038369 deg
peri 1.337173403699352 0.00038418 deg
M 358.7651829531472 1.826e-05 deg
tp 2459007.109423414495
(2020-Jun-06.60942341)
9.7755e-05 TDB
period 1926.919000092225
5.28
1.9632e-05
5.375e-08
d
yr
n .1868267425785775 1.9034e-09 deg/d
Q 3.583925192402252 2.4342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      15709 days (43.01 yr)  
   first obs. used      1977-10-16  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:01:59  

Additional Information
 Earth MOID = 1.49024 au 
 Jupiter MOID = 1.74484 au 
 T_jup = 3.217 
[ 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 16.1   n/a MPO266354  
diameter diameter 2.545 km 0.618 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101179 (1998 SA9)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 SA9 = 2005 AK55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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