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18459 (1995 FD1)
Classification: Main-belt Asteroid          SPK-ID: 2018459
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1641855640051427 2.6942e-08  
a 2.38185078148521 7.908e-09 au
q 1.990785267550971 6.4769e-08 au
i 1.822346112983798 3.9841e-06 deg
node 347.3203532356561 9.5683e-05 deg
peri 243.8262979010507 9.6491e-05 deg
M 326.4077062241803 1.2648e-05 deg
tp 2459325.787404171452
(2021-Apr-21.28740417)
4.7355e-05 TDB
period 1342.672989308907
3.68
6.6867e-06
1.831e-08
d
yr
n .2681218754428784 1.3353e-09 deg/d
Q 2.772916295419449 9.2064e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1965  
   data-arc span      9476 days (25.94 yr)  
   first obs. used      1995-03-27  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49982  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:29:37  

Additional Information
 Earth MOID = .979764 au 
 Jupiter MOID = 2.22196 au 
 T_jup = 3.519 
[ 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 14.4   n/a MPO452432  
diameter diameter 3.660 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.241 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.275   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18459 (1995 FD1)          Discovered 1995-Mar-28 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 FD1 = 1999 LQ22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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