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18539 (1996 XX30)
Classification: Main-belt Asteroid          SPK-ID: 2018539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2101649844918421 3.4263e-08  
a 2.599588346655205 1.0571e-08 au
q 2.05324590209524 8.7233e-08 au
i 3.645850467981629 3.8038e-06 deg
node 240.9956939124193 6.5471e-05 deg
peri 185.2125679503557 6.6274e-05 deg
M 330.4583757681035 1.2868e-05 deg
tp 2459522.128208873619
(2021-Nov-03.62820887)
5.5161e-05 TDB
period 1530.9298784483
4.19
9.3378e-06
2.557e-08
d
yr
n .2351512012848584 1.4343e-09 deg/d
Q 3.145930791215169 1.2792e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1453  
   data-arc span      14966 days (40.97 yr)  
   first obs. used      1979-11-14  
   last obs. used      2020-11-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:31:20  

Additional Information
 Earth MOID = 1.06674 au 
 Jupiter MOID = 2.17191 au 
 T_jup = 3.381 
[ 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 14.30   n/a MPCxxxxx  
diameter diameter 3.626 km 0.986 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.308   0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18539 (1996 XX30)          Discovered 1996-Dec-14 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 XX30 = 1979 VN3 = 1991 PH17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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