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18351 (1990 QN5)
Classification: Main-belt Asteroid          SPK-ID: 2018351
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1756700601636544 3.5442e-08  
a 2.789674496788555 1.1242e-08 au
q 2.299612210100697 9.8476e-08 au
i 8.630739213075636 4.5261e-06 deg
node 345.1182133710788 2.1136e-05 deg
peri 41.010572896879 2.4077e-05 deg
M 183.9993802498244 1.2285e-05 deg
tp 2460228.532750596536
(2023-Oct-11.03275060)
5.9755e-05 TDB
period 1701.879178834279
4.66
1.0287e-05
2.816e-08
d
yr
n .2115308797928805 1.2786e-09 deg/d
Q 3.279736783476413 1.3217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2353  
   data-arc span      11266 days (30.84 yr)  
   first obs. used      1990-08-22  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45523  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:36:21  

Additional Information
 Earth MOID = 1.31011 au 
 Jupiter MOID = 2.23473 au 
 T_jup = 3.291 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.35   n/a MPO614063  
diameter diameter 5.753 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.339 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.194   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18351 (1990 QN5)          Discovered 1990-Aug-29 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QN5 = 1997 DV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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