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181805 (1998 QN88)
Classification: Main-belt Asteroid          SPK-ID: 2181805
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2108066865330075 4.3114e-08  
a 3.079338133218873 2.4684e-08 au
q 2.430193064640265 1.2634e-07 au
i 13.71792430925209 5.7854e-06 deg
node 203.5651216189471 1.7557e-05 deg
peri 79.35589943255901 2.304e-05 deg
M 86.31618937878542 1.4329e-05 deg
tp 2458727.267834889817
(2019-Aug-31.76783489)
7.6091e-05 TDB
period 1973.715251632013
5.40
2.3732e-05
6.497e-08
d
yr
n .1823971313502925 2.1931e-09 deg/d
Q 3.72848320179748 2.9887e-08 au
  Orbit Determination Parameters
   # obs. used (total)      641  
   data-arc span      8182 days (22.40 yr)  
   first obs. used      1998-08-19  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55009  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:06  

Additional Information
 Earth MOID = 1.45882 au 
 Jupiter MOID = 1.62787 au 
 T_jup = 3.151 
[ 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 15.01   n/a E2021B55  
diameter diameter 7.138 km 1.794 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.038   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

181805 (1998 QN88)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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