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15994 (1998 YO8)
Classification: Main-belt Asteroid          SPK-ID: 2015994
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06080731910229747 3.6235e-08  
a 2.27051229191562 6.0106e-09 au
q 2.132448526455418 8.2092e-08 au
i 5.054567904110163 3.309e-06 deg
node 143.5322769366589 3.9635e-05 deg
peri 47.0322677162449 4.6267e-05 deg
M 137.4097807660938 2.3457e-05 deg
tp 2458919.520889993113
(2020-Mar-11.02088999)
8.1601e-05 TDB
period 1249.637970784463
3.42
4.9621e-06
1.359e-08
d
yr
n .2880834356961876 1.1439e-09 deg/d
Q 2.408576057375822 6.3761e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      15403 days (42.17 yr)  
   first obs. used      1979-04-25  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49513  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:32:17  

Additional Information
 Earth MOID = 1.13745 au 
 Jupiter MOID = 2.54841 au 
 T_jup = 3.605 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456892.5 (2014-Aug-23.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06069279658735527 3.613e-08  
q 2.132022051011952 8.1802e-08 au
tp 2456420.593839406011
(2013-May-08.09383941)
8.3341e-05 TDB
node 143.5646801448751 3.9647e-05 deg
peri 46.69140084961308 4.6336e-05 deg
i 5.053520865682476 3.3082e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      15403 days (42.17 yr)  
   first obs. used      1979-04-25  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49513  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:32:17  

Additional Information
 Jupiter MOID = 2.54841 au 
 T_jup = 3.605 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.305374310310648E-15 -2.948696458308168E-15 1.097957863930582E-13 5.407946512764143E-15 2.925675391760795E-14 -1.097104103202186E-15
q -2.948696458308168E-15 6.691559459369053E-15 -3.434806198554478E-13 -1.186331264291981E-14 -9.099197518951482E-14 2.582360859367612E-15
tp 1.097957863930582E-13 -3.434806198554478E-13 6.945726749045291E-9 1.110259559223902E-11 2.011324126922583E-9 6.334083729135442E-13
node 5.407946512764143E-15 -1.186331264291981E-14 1.110259559223902E-11 1.571866242006024E-9 -1.562002254406311E-9 3.939612701208108E-11
peri 2.925675391760795E-14 -9.099197518951482E-14 2.011324126922583E-9 -1.562002254406311E-9 2.147062018693881E-9 -3.905572447721118E-11
i -1.097104103202186E-15 2.582360859367612E-15 6.334083729135442E-13 3.939612701208108E-11 -3.905572447721118E-11 1.094409987465316E-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 14.17   n/a E2021B10  
diameter diameter 3.890 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.321   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15994 (1998 YO8)          Discovered 1998-Dec-23 by Korlevic, K. at Visnjan
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 YO8 = 1979 HC3 = 1982 BN13 = 1989 EK10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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