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216923 (1998 DM12)
Classification: Main-belt Asteroid          SPK-ID: 2216923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09602152130319741 4.6611e-08  
a 2.255084576244344 1.269e-08 au
q 2.038547924565986 1.0561e-07 au
i 5.856993461221688 5.2271e-06 deg
node 140.4929702143923 4.7076e-05 deg
peri 51.37390784024814 5.5259e-05 deg
M 304.813977870052 3.1248e-05 deg
tp 2459586.113506110399
(2022-Jan-06.61350611)
0.00010829 TDB
period 1236.923038935616
3.39
1.0441e-05
2.859e-08
d
yr
n .2910447850577538 2.4567e-09 deg/d
Q 2.471621227922702 1.3909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      8385 days (22.96 yr)  
   first obs. used      1998-02-23  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:48  

Additional Information
 Earth MOID = 1.04574 au 
 Jupiter MOID = 2.48896 au 
 T_jup = 3.611 
[ 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 17.51   n/a MPCxxxxx  

216923 (1998 DM12)          Discovered 1998-Feb-23 by Spacewatch at Kitt Peak
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09

[ 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
2124-Jul-18 16:02 00:05 Thisb 0.0324281095203175 0.032424198624058 0.0324320905724137 4.6694572686698 4.66945722364137 2497034.167827940 5.14991500595365 2543.22567954962 68.3565004774066 -85.841470279927 70751.8270437533 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:49 2021-Apr-13 23:56

Alternate Designations
 1998 DM12 = 2006 SY305 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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