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18629 (1998 DZ33)
Classification: Main-belt Asteroid          SPK-ID: 2018629
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1452853413184956 3.3843e-08  
a 2.576775068001741 9.5992e-09 au
q 2.202407422746118 8.4193e-08 au
i 12.19318093346894 3.3047e-06 deg
node 165.3087911829005 1.4518e-05 deg
peri 13.81388935268457 1.8066e-05 deg
M 174.4420562361005 1.247e-05 deg
tp 2458468.414360280922
(2018-Dec-15.91436028)
5.0444e-05 TDB
period 1510.821621720409
4.14
8.4424e-06
2.311e-08
d
yr
n .2382809425179256 1.3315e-09 deg/d
Q 2.951142713257363 1.0994e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1706  
   data-arc span      9271 days (25.38 yr)  
   first obs. used      1995-08-22  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:33:46  

Additional Information
 Earth MOID = 1.20833 au 
 Jupiter MOID = 2.01202 au 
 T_jup = 3.380 
[ 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 14.39   n/a E2021B10  
diameter diameter 4.079 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.243   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18629 (1998 DZ33)          Discovered 1998-Feb-27 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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