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27250 (1999 XB)
Classification: Main-belt Asteroid          SPK-ID: 2027250
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061438140991377 4.7228e-08  
a 2.639091815728232 1.5946e-08 au
q 2.095059363076195 1.2778e-07 au
i 15.23044500135138 4.9596e-06 deg
node 29.99120202775119 1.7216e-05 deg
peri 321.445510524799 1.9625e-05 deg
M 341.4716115429795 1.1531e-05 deg
tp 2459281.096340549910
(2021-Mar-07.59634055)
5.0598e-05 TDB
period 1565.958241067297
4.29
1.4193e-05
3.886e-08
d
yr
n .2298911877462567 2.0836e-09 deg/d
Q 3.183124268380269 1.9233e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      9067 days (24.82 yr)  
   first obs. used      1995-10-22  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:36:15  

Additional Information
 Earth MOID = 1.11118 au 
 Jupiter MOID = 2.32856 au 
 T_jup = 3.316 
[ 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 14.25   n/a E2021B10  
diameter diameter 3.735 km 0.538 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27250 (1999 XB)          Discovered 1999-Dec-01 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 XB = 1998 HP80 = 1999 SV8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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