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18638 Nouet (1998 EP3)
Classification: Main-belt Asteroid          SPK-ID: 2018638
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1803942208960508 2.9023e-08  
a 2.651212061692672 1.2593e-08 au
q 2.17294872739341 8.1549e-08 au
i 9.419495602212304 6.3569e-07 deg
node 6.233463002066245 3.981e-06 deg
peri 301.8650141533449 5.4578e-06 deg
M 356.4400951381298 3.0709e-06 deg
tp 2459216.091970991126
(2021-Jan-01.59197099)
1.3518e-05 TDB
period 1576.758305236445
4.32
1.1234e-05
3.076e-08
d
yr
n .2283165395764418 1.6267e-09 deg/d
Q 3.129475395991934 1.4864e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1864  
   data-arc span      10035 days (27.47 yr)  
   first obs. used      1993-03-22  
   last obs. used      2020-09-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50298  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:33:58  

Additional Information
 Earth MOID = 1.17439 au 
 Jupiter MOID = 2.21954 au 
 T_jup = 3.348 
[ 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 13.55   n/a E2021B10  
diameter diameter 8.675 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.102   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18638 Nouet           Discovered 1998 Mar. 2 by the OCA-DLR Asteroid Survey at Caussols.
Nicolas Nouet, an astronomer at the Observatoire de Paris, traveled to St. Domingue to map the island. Later he mapped the Rhine region and traveled with Napoleon Bonaparte to Egypt, where he created a map of that country.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1987-Jan-29 17:03 < 00:01 Amphi 0.0428886617062487 0.0428846415336992 0.0428926819697837 3.90299770459987 3.90299767025735 2446825.210671499 0.63321705415701 224.097232241779 39.7145017184739 -27.0800300032322 77793.9184875807 T 30 CATAB v2.0f-lin.ifort 2021-Apr-13 02:34:43 2021-Apr-13 02:34

Alternate Designations
 1998 EP3 = 1969 TY = 1996 XB32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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