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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1161183793270464 4.4409e-08  
a 3.024897878534321 1.297e-08 au
q 2.673651639249095 1.3507e-07 au
i 8.924371677826738 4.3498e-06 deg
node 297.5282160345098 2.5814e-05 deg
peri 47.11528660013717 2.9697e-05 deg
M 216.0755263727513 1.6581e-05 deg
tp 2459968.739533041512
(2023-Jan-24.23953304)
9.0443e-05 TDB
period 1921.606693599769
5.26
1.2359e-05
3.384e-08
d
yr
n .1873432275184303 1.2049e-09 deg/d
Q 3.376144117819547 1.4476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2542  
   data-arc span      31959 days (87.50 yr)  
   first obs. used      1933-09-21  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41336  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:31:16  

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

[ 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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