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442348 (2011 ST212)
Classification: Main-belt Asteroid          SPK-ID: 2442348
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1047600196214271 3.5807e-07  
a 2.552464076747129 3.1595e-08 au
q 2.285067889984112 9.3271e-07 au
i 14.18203411962277 1.2258e-05 deg
node 309.4511935607161 2.4942e-05 deg
peri 5.477806563787043 5.3137e-05 deg
M 176.7984282967014 3.5397e-05 deg
tp 2458665.000920681612
(2019-Jun-30.50092068)
0.00014596 TDB
period 1489.49100448272
4.08
2.7655e-05
7.572e-08
d
yr
n .2416933025554076 4.4875e-09 deg/d
Q 2.819860263510146 3.4904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      7273 days (19.91 yr)  
   first obs. used      2001-01-19  
   last obs. used      2020-12-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56891  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:43:57  

Additional Information
 Earth MOID = 1.27072 au 
 Jupiter MOID = 2.4533 au 
 T_jup = 3.389 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457764.5 (2017-Jan-11.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058859842783663 3.5691e-07  
q 2.281083958875507 9.3042e-07 au
tp 2457176.611467850358
(2015-Jun-03.11146785)
0.00014673 TDB
node 309.5269550349707 2.4946e-05 deg
peri 5.4531848032935 5.2593e-05 deg
i 14.17958152646102 1.2258e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      7273 days (19.91 yr)  
   first obs. used      2001-01-19  
   last obs. used      2020-12-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56891  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:43:57  

Additional Information
 Jupiter MOID = 2.4533 au 
 T_jup = 3.389 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.273864879083717E-13 -3.319905842306899E-13 -2.757633050921387E-12 6.52577620260956E-14 -7.833881778298867E-12 -6.89584961794303E-13
q -3.319905842306899E-13 8.656797563357294E-13 6.150644189549946E-12 -1.660476404882981E-13 2.017176139631354E-11 1.804072386567941E-12
tp -2.757633050921387E-12 6.150644189549946E-12 2.153086378660041E-8 -3.109540060400266E-11 6.167772874025592E-9 -4.529948828715188E-11
node 6.52577620260956E-14 -1.660476404882981E-13 -3.109540060400266E-11 6.223258390100725E-10 -6.14547228538779E-10 1.798593288100385E-10
peri -7.833881778298867E-12 2.017176139631354E-11 6.167772874025592E-9 -6.14547228538779E-10 2.766054022388474E-9 -1.488779954822729E-10
i -6.89584961794303E-13 1.804072386567941E-12 -4.529948828715188E-11 1.798593288100385E-10 -1.488779954822729E-10 1.502684662495779E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.49   n/a MPCxxxxx  

442348 (2011 ST212)          Discovered 2009-Jan-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 ST212 = 2009 AR3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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