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JPL Small-Body Database Browser
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20824 (2000 UX9)
Classification: Main-belt Asteroid          SPK-ID: 2020824
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2416764198347042 4.0038e-08  
a 2.296406675439564 9.8939e-09 au
q 1.741419331634815 9.4129e-08 au
i 2.630212152303518 4.1649e-06 deg
node 216.1555843434965 0.00010448 deg
peri 125.7742625887224 0.00010484 deg
M 270.8442727844713 9.4888e-06 deg
tp 2459315.288148975348
(2021-Apr-10.78814898)
3.4053e-05 TDB
period 1271.07631972057
3.48
8.2145e-06
2.249e-08
d
yr
n .2832245353128295 1.8304e-09 deg/d
Q 2.851394019244314 1.2285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      24675 days (67.56 yr)  
   first obs. used      1951-09-04  
   last obs. used      2019-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:45:44  

Additional Information
 Earth MOID = .735023 au 
 Jupiter MOID = 2.56492 au 
 T_jup = 3.554 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456644.5 (2013-Dec-18.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .241456097255016 4.0137e-08  
q 1.742222941166527 9.4375e-08 au
tp 2456770.601074323485
(2014-Apr-23.10107432)
3.3143e-05 TDB
node 216.3505539079359 0.00010484 deg
peri 125.2000329457406 0.00010519 deg
i 2.62416320234351 4.1596e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      24675 days (67.56 yr)  
   first obs. used      1951-09-04  
   last obs. used      2019-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:45:44  

Additional Information
 Jupiter MOID = 2.56492 au 
 T_jup = 3.554 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.610974387680137E-15 -3.776686154596123E-15 -2.411223003569206E-13 8.511116890395756E-15 -8.574530733822112E-14 -1.053635961500343E-15
q -3.776686154596123E-15 8.90662581714064E-15 5.109337354923568E-13 -1.916119526644049E-14 1.841483167680703E-13 2.588958875391298E-15
tp -2.411223003569206E-13 5.109337354923568E-13 1.098460081442212E-9 1.418265319704365E-11 3.092385396924911E-10 9.512804226583496E-13
node 8.511116890395756E-15 -1.916119526644049E-14 1.418265319704365E-11 1.099080363803461E-8 -1.097506756914957E-8 6.270310099066033E-12
peri -8.574530733822112E-14 1.841483167680703E-13 3.092385396924911E-10 -1.097506756914957E-8 1.106530205057958E-8 -6.023412567774549E-12
i -1.053635961500343E-15 2.588958875391298E-15 9.512804226583496E-13 6.270310099066033E-12 -6.023412567774549E-12 1.730265652251219E-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 15.8   n/a MPO324501  
diameter diameter 2.051 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.220   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20824 (2000 UX9)          Discovered 2000-Oct-24 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 UX9 = 1951 RP = 1998 BX4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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