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18641 (1998 EG10)
Classification: Main-belt Asteroid          SPK-ID: 2018641
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1041237166020511 1.021e-08  
a 2.356506290640293 7.8047e-09 au
q 2.111138097462713 2.3209e-08 au
i 7.155427521208398 8.1325e-07 deg
node 308.2554245924397 4.8883e-06 deg
peri 103.5355389019764 1.2588e-05 deg
M 204.797520027565 1.1342e-05 deg
tp 2459770.136078246288
(2022-Jul-09.63607825)
4.2633e-05 TDB
period 1321.299686738804
3.62
6.5642e-06
1.797e-08
d
yr
n .2724590065472142 1.3536e-09 deg/d
Q 2.601874483817873 8.6174e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2009  
   data-arc span      18752 days (51.34 yr)  
   first obs. used      1969-03-12  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44142  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:33:59  

Additional Information
 Earth MOID = 1.13501 au 
 Jupiter MOID = 2.69168 au 
 T_jup = 3.536 
[ 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 13.99   n/a E2021B10  
diameter diameter 3.717 km 0.650 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.2461 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Oszkiewicz, D.; Skiff, B.A.; Moskovitz, N.; Kaniewicz, P.; et al. (2017) Astron. Astrophys. 599, A107.]
[Skiff, B.A. (2019) Posting on CALL web site: http://www.minorplanet.info/call.html]
geometric albedo albedo 0.423   0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18641 (1998 EG10)          Discovered 1998-Mar-06 by Kagawa, T. at Gekko
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 EG10 = 1969 EG = 1987 DV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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