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JPL Small-Body Database Browser
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25549 Jonsauer (1999 XZ167)
Classification: Main-belt Asteroid          SPK-ID: 2025549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262769532829821 3.7752e-08  
a 2.412715643065762 9.1541e-09 au
q 2.108045262521227 9.179e-08 au
i 5.105482876430247 4.0405e-06 deg
node 41.59803237726307 4.6691e-05 deg
peri 95.2948487094886 4.9954e-05 deg
M 118.7268690396982 1.6013e-05 deg
tp 2458549.055723587321
(2019-Mar-06.55572359)
6.1e-05 TDB
period 1368.855599605035
3.75
7.7904e-06
2.133e-08
d
yr
n .2629934085844213 1.4967e-09 deg/d
Q 2.717386023610298 1.031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1179  
   data-arc span      12596 days (34.49 yr)  
   first obs. used      1984-11-27  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52752  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:30:18  

Additional Information
 Earth MOID = 1.1289 au 
 Jupiter MOID = 2.3138 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456575.5 (2013-Oct-10.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267178407902599 3.7762e-08  
q 2.106121684221586 9.2021e-08 au
tp 2457181.376947326934
(2015-Jun-07.87694733)
6.1656e-05 TDB
node 41.64727796243429 4.6684e-05 deg
peri 95.25327727167421 4.9916e-05 deg
i 5.106805841415214 4.041e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1179  
   data-arc span      12596 days (34.49 yr)  
   first obs. used      1984-11-27  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52752  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:30:18  

Additional Information
 Jupiter MOID = 2.3138 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.425991989328428E-15 -3.461344262907248E-15 3.429620595924333E-13 1.404430796721785E-14 1.12082549699444E-13 -2.133511383785241E-15
q -3.461344262907248E-15 8.467801107980484E-15 -9.304356934058032E-13 -3.301690996395474E-14 -3.081861949386717E-13 5.221018743700109E-15
tp 3.429620595924333E-13 -9.304356934058032E-13 3.801426571012747E-9 -1.721164292996098E-11 1.104487180502206E-9 1.511242438525071E-12
node 1.404430796721785E-14 -3.301690996395474E-14 -1.721164292996098E-11 2.179387249968307E-9 -2.174950100498952E-9 -2.044069330635172E-11
peri 1.12082549699444E-13 -3.081861949386717E-13 1.104487180502206E-9 -2.174950100498952E-9 2.491568130421248E-9 2.073263104981294E-11
i -2.133511383785241E-15 5.221018743700109E-15 1.511242438525071E-12 -2.044069330635172E-11 2.073263104981294E-11 1.632928803468701E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO474102  
diameter diameter 5.072 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.124 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.069   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

25549 Jonsauer           Discovered 1999 Dec. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jonothon Sauer mentored a finalist in the 2009 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the William Mason High School, Mason, Ohio.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090311/MPCPages.arcLast Updated: 2009-03-12

Alternate Designations
 1999 XZ167 = 1984 WX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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