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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2107432018794935 3.7075e-08  
a 2.602646168964288 1.1148e-08 au
q 2.054156181957357 9.3861e-08 au
i 3.648310910286642 3.9736e-06 deg
node 241.1064606938039 6.941e-05 deg
peri 184.7776057674392 7.0196e-05 deg
M 237.8220660481746 1.2629e-05 deg
tp 2459520.988810347961
(2021-Nov-02.48881035)
5.5669e-05 TDB
period 1533.631856953383
4.20
9.8537e-06
2.698e-08
d
yr
n .2347369079272737 1.5082e-09 deg/d
Q 3.15113615597122 1.3498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1351  
   data-arc span      14811 days (40.55 yr)  
   first obs. used      1979-11-14  
   last obs. used      2020-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:23:09  

Additional Information
 Earth MOID = 1.06788 au 
 Jupiter MOID = 2.16682 au 
 T_jup = 3.379 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456749.5 (2014-Apr-02.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2137714262138715 3.7323e-08  
q 2.042784928825681 9.4961e-08 au
tp 2456458.596400204017
(2013-Jun-15.09640020)
4.6219e-05 TDB
node 241.1794666603371 6.9237e-05 deg
peri 184.6063352108903 6.9992e-05 deg
i 3.655271599880406 3.9813e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1351  
   data-arc span      14811 days (40.55 yr)  
   first obs. used      1979-11-14  
   last obs. used      2020-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:23:09  

Additional Information
 Jupiter MOID = 2.16682 au 
 T_jup = 3.379 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.392978460202006E-15 -3.531305175622249E-15 4.179666827514205E-13 8.387429723296096E-15 5.341692920840563E-14 -9.164594773020257E-16
q -3.531305175622249E-15 9.017604973286102E-15 -9.868892369360662E-13 -2.160901434526712E-14 -1.16241938521297E-13 2.362795791168744E-15
tp 4.179666827514205E-13 -9.868892369360662E-13 2.136218514849636E-9 1.383193397414401E-11 4.944099131083376E-10 -1.449665151359262E-12
node 8.387429723296096E-15 -2.160901434526712E-14 1.383193397414401E-11 4.793702280487592E-9 -4.780725630872966E-9 1.801518182178276E-11
peri 5.341692920840563E-14 -1.16241938521297E-13 4.944099131083376E-10 -4.780725630872966E-9 4.898848043893064E-9 -1.828894073419878E-11
i -9.164594773020257E-16 2.362795791168744E-15 -1.449665151359262E-12 1.801518182178276E-11 -1.828894073419878E-11 1.585112557536788E-11

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 14.3   n/a MPO384913  
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

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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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