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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .116310278957563 4.0897e-08  
a 3.024265472813952 1.2561e-08 au
q 2.672512312029235 1.2561e-07 au
i 8.924390994280795 3.9459e-06 deg
node 297.5257261631157 2.5248e-05 deg
peri 47.18517261436565 2.9126e-05 deg
M 252.7393789976884 1.6645e-05 deg
tp 2459968.855815732317
(2023-Jan-24.35581573)
9.0292e-05 TDB
period 1921.004108853643
5.26
1.1968e-05
3.277e-08
d
yr
n .1874019937494197 1.1675e-09 deg/d
Q 3.376018633598668 1.4022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2731  
   data-arc span      32099 days (87.88 yr)  
   first obs. used      1933-09-21  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40385  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:45:25  

Additional Information
 Earth MOID = 1.67291 au 
 Jupiter MOID = 2.01623 au 
 T_jup = 3.217 
[ 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 11.83   n/a MPO614063  
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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