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442381 (2011 UA9)
Classification: Main-belt Asteroid          SPK-ID: 2442381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3322666586572574 8.3633e-08  
a 2.602150693174378 3.1998e-08 au
q 1.737542777030662 2.3495e-07 au
i 3.635061815767391 5.8171e-06 deg
node 220.4076904061615 6.9288e-05 deg
peri 121.3767842316004 7.0656e-05 deg
M 50.71821952820591 7.9694e-06 deg
tp 2458784.497593175154
(2019-Oct-27.99759318)
3.2643e-05 TDB
period 1533.193932679349
4.20
2.828e-05
7.743e-08
d
yr
n .2348039555380174 4.3309e-09 deg/d
Q 3.466758609318095 4.2629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      353  
   data-arc span      5017 days (13.74 yr)  
   first obs. used      2006-04-30  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:10  

Additional Information
 Earth MOID = .733064 au 
 Jupiter MOID = 1.97573 au 
 T_jup = 3.331 
[ 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 17.0   n/a MPO440831  

442381 (2011 UA9)          Discovered 2006-Apr-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1908-May-06 08:47 00:06 Jupiter 1.99978078763253 1.99977863893468 1.99978293633713 0.751890202507879 n/a 2418067.865835743 5.82149133791812 244.43480347382 59.026495838204 -67.8526325698317 4715741.91549358 F 16 CATAB v2.0f-lin.ifort 2020-Feb-26 10:41:27 2020-Feb-26 10:41
1979-Sep-05 10:12 00:02 Jupiter 1.98030549499483 1.98030458235314 1.98030640763738 0.624943068360151 n/a 2444121.925137280 1.92025162805791 138.532451857858 39.493400374773 -80.1941564402277 7398804.90081007 F 16 CATAB v2.0f-lin.ifort 2020-Feb-26 10:41:27 2020-Feb-26 10:41
2051-Jan-04 03:57 00:02 Jupiter 1.96464807089983 1.96464749771307 1.96464864408724 0.537730407116344 n/a 2470175.664879662 2.00113393428082 153.908042417953 26.5431626617478 -85.9895183667659 11043793.4502517 F 16 CATAB v2.0f-lin.ifort 2020-Feb-26 10:41:27 2020-Feb-26 10:41
2122-May-05 08:55 00:06 Jupiter 1.96013481273022 1.96013409644866 1.96013552902372 0.511206807868711 n/a 2496228.871474641 5.81888338254866 319.117344274752 23.1849635851494 -85.1027219340886 12598487.3317467 F 16 CATAB v2.0f-lin.ifort 2020-Feb-26 10:41:27 2020-Feb-26 10:41
2193-Sep-02 18:14 00:10 Jupiter 1.95778601114465 1.95778545065837 1.95778657164551 0.524485671647558 n/a 2522282.259396269 9.6421683058029 450.153277379005 22.5055969456005 -87.8874163717915 13001670.3197176 F 16 CATAB v2.0f-lin.ifort 2020-Feb-26 10:41:27 2020-Feb-26 10:41

Alternate Designations
 2011 UA9 = 2006 HH96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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