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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1919-Aug-28 20:19 00:02 Jupiter 1.99470229710387 1.99470193549788 1.99470265870985 3.84215375421668 3.72999642889507 2422199.346629151 1.75918779645517 100.56402513243 16.1182403024964 -88.8301534354406 3534047.82048828 T 38 CATAB v2.0f-lin.ifort 2021-Feb-24 00:55:54 2021-Feb-24 00:55
1966-Dec-26 08:22 < 00:01 Jupiter 1.99935500325572 1.99935465527804 1.9993553512334 3.89138432986448 3.78094911832995 2439485.848404287 0.881065681481839 74.5519070309756 14.4880072283167 -86.0332988747301 3788695.32314995 T 38 CATAB v2.0f-lin.ifort 2021-Feb-24 00:55:54 2021-Feb-24 00:55

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