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JPL Small-Body Database Browser
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19521 Chaos (1998 WH24)
Classification: TransNeptunian Object          SPK-ID: 2019521
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09837891936511671 9.2585e-05  
a 45.47146312914361 0.0078376 au
q 40.99802972454772 0.0029561 au
i 12.0462967426287 0.00014015 deg
node 50.00618437150097 0.00017671 deg
peri 57.62454665185705 0.051292 deg
M 342.7714141054378 0.045431 deg
tp 2464360.366238817403
(2035-Feb-01.86623882)
12.778 TDB
period 111997.1109517049
306.63
28.956
0.07928
d
yr
n .003214368629162571 8.3106e-07 deg/d
Q 49.94489653373952 0.0086087 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      9595 days (26.27 yr)  
   first obs. used      1991-10-17  
   last obs. used      2018-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .46801  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-05 17:33:03  

Additional Information
 Earth MOID = 40.0306 au 
 Jupiter MOID = 35.8635 au 
 T_jup = 5.869 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 4.8   n/a MPO166030  

19521 Chaos           Discovered 1998 Nov. 19 by the Deep Ecliptic Survey.
According to Hesiod, Chaos gave birth to Nyx (Night) and Erebus (Darkness). In the Pelasgian creation myth, Eurynome, the Goddess of All Things emerged from Chaos. In the Olympian version, Mother Earth emerged from Chaos.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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