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43177 (1999 XQ198)
Classification: Outer Main-belt Asteroid          SPK-ID: 2043177
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04298085989401704 4.1544e-08  
a 3.221499006503419 2.5757e-08 au
q 3.083036209056181 1.2661e-07 au
i 14.4396038489817 4.5561e-06 deg
node 57.58047070824184 1.569e-05 deg
peri 111.9995260787669 5.2029e-05 deg
M 145.4252860474418 4.9191e-05 deg
tp 2458347.354989045291
(2018-Aug-16.85498905)
0.00028992 TDB
period 2111.958740404334
5.78
2.5329e-05
6.935e-08
d
yr
n .1704578754843848 2.0443e-09 deg/d
Q 3.359961803950658 2.6865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1202  
   data-arc span      8048 days (22.03 yr)  
   first obs. used      1998-09-27  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:16:56  

Additional Information
 Earth MOID = 2.11466 au 
 Jupiter MOID = 1.68326 au 
 T_jup = 3.138 
[ 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 13.85   n/a E2021B10  
diameter diameter 6.443 km 1.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.128   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

43177 (1999 XQ198)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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