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1485 Isa (1938 OB)
Classification: Main-belt Asteroid          SPK-ID: 2001485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1161183797040122 4.5315e-08  
a 3.024897875254234 1.3074e-08 au
q 2.673651635209603 1.3763e-07 au
i 8.924371628918843 4.435e-06 deg
node 297.5282163268456 2.5954e-05 deg
peri 47.11528634665457 2.9834e-05 deg
M 216.0755266925243 1.6597e-05 deg
tp 2459968.739530085053
(2023-Jan-24.23953009)
9.0534e-05 TDB
period 1921.60669047419
5.26
1.2458e-05
3.411e-08
d
yr
n .1873432278231524 1.2146e-09 deg/d
Q 3.376144115298865 1.4592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2460  
   data-arc span      31895 days (87.32 yr)  
   first obs. used      1933-09-21  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:55:48  

Additional Information
 Earth MOID = 1.67296 au 
 Jupiter MOID = 2.01616 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456628.5 (2013-Dec-02.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110281924684077 4.4693e-08  
q 2.69501313323928 1.3445e-07 au
tp 2456116.119998580144
(2012-Jul-07.61999858)
8.8485e-05 TDB
node 297.6171906562781 2.5891e-05 deg
peri 46.35327955058743 3.0225e-05 deg
i 8.928523763607805 4.4272e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2460  
   data-arc span      31895 days (87.32 yr)  
   first obs. used      1933-09-21  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:55:48  

Additional Information
 Jupiter MOID = 2.01616 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.99747830019156E-15 -5.986521849378197E-15 -1.008700894303896E-13 -2.086653822041722E-15 -4.366502645075915E-14 1.021103801483705E-16
q -5.986521849378197E-15 1.807674420062757E-14 4.447261677020645E-13 5.213555661116183E-15 1.616228242969135E-13 -2.553804383749985E-16
tp -1.008700894303896E-13 4.447261677020645E-13 7.829578695292622E-9 -1.905300060606673E-12 1.400592730631044E-9 1.31801604047073E-13
node -2.086653822041722E-15 5.213555661116183E-15 -1.905300060606673E-12 6.703553189346541E-10 -6.628310765394748E-10 4.235066071776251E-11
peri -4.366502645075915E-14 1.616228242969135E-13 1.400592730631044E-9 -6.628310765394748E-10 9.135555173657535E-10 -4.183992303493289E-11
i 1.021103801483705E-16 -2.553804383749985E-16 1.31801604047073E-13 4.235066071776251E-11 -4.183992303493289E-11 1.960045605128127E-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 11.84   n/a E2021B10  
diameter diameter 17.336 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.117   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1485 Isa (1938 OB)          Discovered 1938-Jul-28 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 OB = 1933 SL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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