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15704 (1987 SE7)
Classification: Main-belt Asteroid          SPK-ID: 2015704
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1914956434250862 3.5295e-08  
a 2.219882254979424 6.3264e-09 au
q 1.794784474234208 7.9184e-08 au
i 4.823517013625025 3.1897e-06 deg
node 297.056886242856 3.9279e-05 deg
peri 54.15513104503064 4.0432e-05 deg
M 81.8080695137 7.2681e-06 deg
tp 2459121.971789018313
(2020-Sep-29.47178902)
2.4694e-05 TDB
period 1208.073439953948
3.31
5.1643e-06
1.414e-08
d
yr
n .2979951285194412 1.2739e-09 deg/d
Q 2.64498003572464 7.5379e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1934  
   data-arc span      24259 days (66.42 yr)  
   first obs. used      1954-10-06  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:02:56  

Additional Information
 Earth MOID = .792935 au 
 Jupiter MOID = 2.79259 au 
 T_jup = 3.622 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457757.5 (2017-Jan-04.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1918083081517117 3.5198e-08  
q 1.79379348307322 7.9014e-08 au
tp 2457914.736465999492
(2017-Jun-10.23646600)
2.662e-05 TDB
node 297.0749952605835 3.9301e-05 deg
peri 54.34847121019197 4.0454e-05 deg
i 4.822509417882535 3.1885e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1934  
   data-arc span      24259 days (66.42 yr)  
   first obs. used      1954-10-06  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:02:56  

Additional Information
 Jupiter MOID = 2.79259 au 
 T_jup = 3.622 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.238879663934078E-15 -2.775289636064618E-15 -1.030372516908281E-13 1.521019064902498E-14 -6.08066382535013E-14 -2.601582405741592E-15
q -2.775289636064618E-15 6.243148913924312E-15 1.652357370081304E-13 -3.293741083436597E-14 1.130147919448578E-13 6.011310463074393E-15
tp -1.030372516908281E-13 1.652357370081304E-13 7.086297759687411E-10 -1.011798810171931E-11 2.638905958428431E-10 -2.911106629364668E-13
node 1.521019064902498E-14 -3.293741083436597E-14 -1.011798810171931E-11 1.544560901951537E-9 -1.542547122484841E-9 4.642343810700984E-11
peri -6.08066382535013E-14 1.130147919448578E-13 2.638905958428431E-10 -1.542547122484841E-9 1.63656178009835E-9 -4.635981022894299E-11
i -2.601582405741592E-15 6.011310463074393E-15 -2.911106629364668E-13 4.642343810700984E-11 -4.635981022894299E-11 1.016656271831374E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.14   n/a E2021B10  
diameter diameter 3.045 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 109.87 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.174   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15704 (1987 SE7)          Discovered 1987-Sep-20 by Alu, J., Helin, E. F. at Palomar
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1987 SE7 = 1977 QX4 = 1977 RK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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