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JPL Small-Body Database Browser
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11711 Urquiza (1998 HV50)
Classification: Main-belt Asteroid          SPK-ID: 2011711
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1082115848828627 4.3597e-08  
a 2.368326549734544 7.5974e-09 au
q 2.112046180267607 1.0365e-07 au
i 2.903643365337532 3.8592e-06 deg
node 273.4088186310283 8.2556e-05 deg
peri 54.47167565834809 8.3891e-05 deg
M 271.9896760797245 1.5375e-05 deg
tp 2459325.955729051545
(2021-Apr-21.45572905)
5.7129e-05 TDB
period 1331.253621617047
3.64
6.4058e-06
1.754e-08
d
yr
n .2704217995386298 1.3012e-09 deg/d
Q 2.624606919201481 8.4195e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1933  
   data-arc span      13950 days (38.19 yr)  
   first obs. used      1981-11-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:07:49  

Additional Information
 Earth MOID = 1.10201 au 
 Jupiter MOID = 2.65152 au 
 T_jup = 3.537 
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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 14.1   n/a MPO337357  
diameter diameter 3.835 km 0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11711 Urquiza           Discovered 1998 Apr. 25 by LONEOS at the Anderson Mesa Station of the Lowell Observatory.
Luis Urquiza del Valle (1906-2000) was the much-loved grandfather of LONEOS observer L. Levy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010705/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1998 HV50 = 1981 WW5 = 1994 EN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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