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JPL Small-Body Database Browser
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212788 (2007 TK221)
Classification: Main-belt Asteroid          SPK-ID: 2212788
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777134359949397 8.9119e-08  
a 2.461905085054914 1.7339e-08 au
q 2.024391473296391 2.1074e-07 au
i 1.397740228705119 8.0839e-06 deg
node 28.1285207042857 0.00016447 deg
peri 21.72016464562889 0.00016645 deg
M 317.1484538783664 1.8007e-05 deg
tp 2458768.445890093255
(2019-Oct-11.94589009)
6.9857e-05 TDB
period 1410.929730795598
3.86
1.4905e-05
4.081e-08
d
yr
n .2551509066273644 2.6954e-09 deg/d
Q 2.899418696813437 2.042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      6883 days (18.84 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5357  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 16:53:50  

Additional Information
 Earth MOID = 1.03439 au 
 Jupiter MOID = 2.4729 au 
 T_jup = 3.467 
[ 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 17.4   n/a MPO352310  

212788 (2007 TK221)          Discovered 2007-Oct-09 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ 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
1902-Mar-05 00:15 00:07 Iris 0.0161258662142895 0.016105402901428 0.0161463538696703 1.98460175481088 1.98460157518181 2415813.510081245 6.54760923687614 1419.03069580266 59.2721887784558 -44.1546029269968 28314.4142340326 T 12 CATAB v2.0f-lin.ifort 2019-Dec-04 16:54:02 2019-Dec-04 16:54
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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