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15678 (1981 DM)
Classification: Main-belt Asteroid          SPK-ID: 2015678
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08225648828753949 3.3398e-08  
a 2.359750325584169 8.9804e-09 au
q 2.165645550566237 7.9644e-08 au
i 6.629929833690142 3.7716e-06 deg
node 262.535925721246 3.2171e-05 deg
peri 339.7107879868222 3.9821e-05 deg
M 241.1402054974413 2.4606e-05 deg
tp 2459437.649497187171
(2021-Aug-11.14949719)
9.1193e-05 TDB
period 1324.029034763256
3.62
7.5582e-06
2.069e-08
d
yr
n .2718973606680538 1.5521e-09 deg/d
Q 2.5538551006021 9.7191e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1579  
   data-arc span      14747 days (40.38 yr)  
   first obs. used      1979-11-26  
   last obs. used      2020-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:06  

Additional Information
 Earth MOID = 1.15361 au 
 Jupiter MOID = 2.46634 au 
 T_jup = 3.538 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456818.5 (2014-Jun-10.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08246438637239827 3.333e-08  
q 2.164914591047786 7.9484e-08 au
tp 2456791.227383386728
(2014-May-13.72738339)
8.7976e-05 TDB
node 262.5891246411348 3.2194e-05 deg
peri 340.027849001249 3.9839e-05 deg
i 6.62745886369246 3.7706e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1579  
   data-arc span      14747 days (40.38 yr)  
   first obs. used      1979-11-26  
   last obs. used      2020-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:06  

Additional Information
 Jupiter MOID = 2.46634 au 
 T_jup = 3.538 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.110876732991155E-15 -2.635016866592423E-15 -3.964794703152249E-14 2.881988410229304E-15 -9.073097210598894E-15 5.751029203765426E-16
q -2.635016866592423E-15 6.317675473919769E-15 1.822470247375319E-13 -7.646320151688078E-15 4.511178779300645E-14 -1.18085078964209E-15
tp -3.964794703152249E-14 1.822470247375319E-13 7.739782281270216E-9 -7.219098747349347E-12 2.077729658037165E-9 1.009503364242104E-12
node 2.881988410229304E-15 -7.646320151688078E-15 -7.219098747349347E-12 1.036428870780216E-9 -1.031106548586305E-9 3.120244002006806E-12
peri -9.073097210598894E-15 4.511178779300645E-14 2.077729658037165E-9 -1.031106548586305E-9 1.587162949581802E-9 -2.839977019476923E-12
i 5.751029203765426E-16 -1.18085078964209E-15 1.009503364242104E-12 3.120244002006806E-12 -2.839977019476923E-12 1.421766337744485E-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 14.6   n/a MPO350928  

15678 (1981 DM)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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