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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1161183802145441 4.4596e-08  
a 3.02489787868095 1.2991e-08 au
q 2.673651636694108 1.3557e-07 au
i 8.924371664365205 4.3679e-06 deg
node 297.5282159985211 2.583e-05 deg
peri 47.11528654202959 2.9714e-05 deg
M 216.0755263812985 1.6581e-05 deg
tp 2459968.739533051749
(2023-Jan-24.23953305)
9.0443e-05 TDB
period 1921.60669373949
5.26
1.2379e-05
3.389e-08
d
yr
n .1873432275048084 1.2069e-09 deg/d
Q 3.376144120667792 1.4499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2529  
   data-arc span      31943 days (87.46 yr)  
   first obs. used      1933-09-21  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:31:32  

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

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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 1.99470230324619 1.99470194785714 1.99470265863523 3.84215334537343 3.72999600873776 2422199.346610649 1.75006445084422 100.100578782996 15.8250576023969 -88.8288392935684 3580072.07728833 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 12:31:52 2021-Apr-12 12:31
1966-Dec-26 08:22 < 00:01 Jupiter 1.99935500425944 1.99935466149784 1.99935534702103 3.89138393959565 3.78094871733726 2439485.848394557 0.876994139178487 74.2248549188134 14.2539699707328 -86.0589693207432 3837846.05211962 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 12:31:52 2021-Apr-12 12:31

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