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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1756700600368352 3.5435e-08  
a 2.789674496730437 1.1239e-08 au
q 2.299612210406573 9.8459e-08 au
i 8.630739282759956 4.5219e-06 deg
node 345.1182131305933 2.1125e-05 deg
peri 41.01057321353419 2.4062e-05 deg
M 183.999380198138 1.228e-05 deg
tp 2460228.532750814880
(2023-Oct-11.03275081)
5.9731e-05 TDB
period 1701.879178781095
4.66
1.0285e-05
2.816e-08
d
yr
n .2115308797994908 1.2784e-09 deg/d
Q 3.279736783054301 1.3214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2362  
   data-arc span      11275 days (30.87 yr)  
   first obs. used      1990-08-22  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:32:42  

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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