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85804 (1998 WQ5)
Classification: Amor [NEO]          SPK-ID: 2085804
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 343 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3544260688902734 1.171e-08  
a 1.720973758718563 2.9132e-09 au
q 1.111015794752625 2.0232e-08 au
i 27.663993052401 1.8833e-06 deg
node 285.7484386616845 1.0131e-06 deg
peri 269.7691038811204 2.8812e-06 deg
M 180.2590971953352 3.1081e-06 deg
tp 2459612.222136056283
(2022-Feb-01.72213606)
7.9544e-06 TDB
period 824.6312701641508
2.26
2.0938e-06
5.733e-09
d
yr
n .436558754227618 1.1085e-09 deg/d
Q 2.330931722684502 3.9456e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      11343 days (31.06 yr)  
   first obs. used      1989-11-25  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3948  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:15:04  

Additional Information
 Earth MOID = .370987 au 
 Jupiter MOID = 3.12482 au 
 T_jup = 3.976 
[ 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 15.42   n/a E2021B10  
diameter diameter 2.272 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 3.0089 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Oey, J. (2006) Minor Planet Bull. 33, 96-99.]
geometric albedo albedo 0.167   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

85804 (1998 WQ5)          Discovered 1998-Nov-19 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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