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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457487.5 (2016-Apr-09.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1728054443374013 3.5246e-08  
q 2.311717424465169 9.7578e-08 au
tp 2456820.392033383163
(2014-Jun-11.89203338)
5.7081e-05 TDB
node 345.1975531014365 2.1072e-05 deg
peri 40.74548857713388 2.4153e-05 deg
i 8.637599991054367 4.5236e-06 deg
  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
 Jupiter MOID = 2.23473 au 
 T_jup = 3.291 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.242277025615694E-15 -3.423550542103093E-15 -5.128549165743144E-13 -2.450879360044313E-15 -1.343542172025055E-13 1.706453826601742E-15
q -3.423550542103093E-15 9.521390498758343E-15 1.431783270373248E-12 6.534666321746843E-15 3.802162164981376E-13 -4.922775342273606E-15
tp -5.128549165743144E-13 1.431783270373248E-12 3.258237826813996E-9 -9.430874550449864E-12 6.794082196804472E-10 -3.310230914026613E-12
node -2.450879360044313E-15 6.534666321746843E-15 -9.430874550449864E-12 4.440273708862242E-10 -4.407467886225388E-10 -2.410122034335504E-12
peri -1.343542172025055E-13 3.802162164981376E-13 6.794082196804472E-10 -4.407467886225388E-10 5.83364473017991E-10 1.671203077749963E-12
i 1.706453826601742E-15 -4.922775342273606E-15 -3.310230914026613E-12 -2.410122034335504E-12 1.671203077749963E-12 2.046333704726869E-11

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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