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15214 (1981 DY)
Classification: Main-belt Asteroid          SPK-ID: 2015214
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 .1445072315893421 3.996e-08  
a 2.779699819081268 1.2159e-08 au
q 2.378013093576439 1.0941e-07 au
i 6.258801139018046 3.5475e-06 deg
node 284.8326849789012 3.8254e-05 deg
peri 326.7249525440259 4.0331e-05 deg
M 189.9424035078787 1.3986e-05 deg
tp 2460196.129505956772
(2023-Sep-08.62950596)
6.7703e-05 TDB
period 1692.759559598825
4.63
1.1106e-05
3.041e-08
d
yr
n .2126704870509301 1.3954e-09 deg/d
Q 3.181386544586096 1.3916e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      24297 days (66.52 yr)  
   first obs. used      1954-07-03  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49652  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 13:57:59  

Additional Information
 Earth MOID = 1.36659 au 
 Jupiter MOID = 1.89163 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457363.5 (2015-Dec-07.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1444981240174838 3.9866e-08  
q 2.378390630633777 1.0913e-07 au
tp 2456813.019883704855
(2014-Jun-04.51988370)
6.2436e-05 TDB
node 284.8777067291467 3.8306e-05 deg
peri 327.161532891447 4.0399e-05 deg
i 6.253991274755677 3.5453e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      24297 days (66.52 yr)  
   first obs. used      1954-07-03  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49652  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 13:57:59  

Additional Information
 Jupiter MOID = 1.89163 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.589265611902485E-15 -4.331204818859571E-15 -8.360799366533256E-14 6.322009348168037E-15 -7.934332516494288E-14 1.470728718170306E-15
q -4.331204818859571E-15 1.190868866232727E-14 2.726973651024211E-13 -1.513139578303027E-14 2.29123396368127E-13 -3.725255957060651E-15
tp -8.360799366533256E-14 2.726973651024211E-13 3.898269421801594E-9 -1.004186418896311E-11 8.227998344394628E-10 -1.952736843533433E-12
node 6.322009348168037E-15 -1.513139578303027E-14 -1.004186418896311E-11 1.467316869486088E-9 -1.460046244875648E-9 -1.821686021378238E-11
peri -7.934332516494288E-14 2.29123396368127E-13 8.227998344394628E-10 -1.460046244875648E-9 1.632091636468893E-9 1.769682961133088E-11
i 1.470728718170306E-15 -3.725255957060651E-15 -1.952736843533433E-12 -1.821686021378238E-11 1.769682961133088E-11 1.256949411537465E-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 14.17   n/a MPO636293  
diameter diameter 8.584 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15214 (1981 DY)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 DY = 1954 NC1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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