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21524 (1998 MB16)
Classification: Main-belt Asteroid          SPK-ID: 2021524
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04143924336827023 3.1445e-08  
a 2.927097182514427 1.4622e-08 au
q 2.805800490005633 9.4876e-08 au
i 3.59451277675343 3.4731e-06 deg
node 77.65880562987478 5.577e-05 deg
peri 85.11530879221868 7.2376e-05 deg
M 290.9996230712391 4.8058e-05 deg
tp 2459747.092887903144
(2022-Jun-16.59288790)
0.00024533 TDB
period 1829.170292438259
5.01
1.3706e-05
3.752e-08
d
yr
n .1968105438231915 1.4747e-09 deg/d
Q 3.04839387502322 1.5228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1458  
   data-arc span      11044 days (30.24 yr)  
   first obs. used      1990-11-18  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49472  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:48  

Additional Information
 Earth MOID = 1.81696 au 
 Jupiter MOID = 1.92147 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457210.5 (2015-Jul-07.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03900399741776732 3.1688e-08  
q 2.813351815814026 9.5082e-08 au
tp 2457929.245261336970
(2017-Jun-24.74526134)
0.00025273 TDB
node 77.69286239863648 5.5837e-05 deg
peri 87.36802230080475 7.4058e-05 deg
i 3.593332319196264 3.4696e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1458  
   data-arc span      11044 days (30.24 yr)  
   first obs. used      1990-11-18  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49472  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:48  

Additional Information
 Jupiter MOID = 1.92147 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.004150119321187E-15 -2.980240160364022E-15 -1.277338828291124E-13 8.392945208919174E-16 -1.147191371199305E-14 1.425277587758151E-16
q -2.980240160364022E-15 9.040679839476341E-15 1.71441037542782E-12 -2.288123661659835E-15 2.774455322174391E-13 -1.558326653371387E-16
tp -1.277338828291124E-13 1.71441037542782E-12 6.387328060770713E-8 1.117443474620537E-11 1.230799573208615E-8 2.605473696262093E-12
node 8.392945208919174E-16 -2.288123661659835E-15 1.117443474620537E-11 3.117814959744564E-9 -3.10938866831085E-9 -7.148146028917138E-12
peri -1.147191371199305E-14 2.774455322174391E-13 1.230799573208615E-8 -3.10938866831085E-9 5.484563959810582E-9 7.633889754196884E-12
i 1.425277587758151E-16 -1.558326653371387E-16 2.605473696262093E-12 -7.148146028917138E-12 7.633889754196884E-12 1.203829057222242E-11

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 14.41   n/a MPCxxxxx  

21524 (1998 MB16)          Discovered 1998-Jun-21 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 MB16 = 1997 EG37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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