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26303 (1998 SD144)
Classification: Main-belt Asteroid          SPK-ID: 2026303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07921603170646528 4.1955e-08  
a 2.543899910059499 1.2464e-08 au
q 2.342382254126152 1.0571e-07 au
i 21.79202140605935 4.8171e-06 deg
node 199.2298075610144 1.1817e-05 deg
peri 279.4523715971945 3.1036e-05 deg
M 34.97898200263351 2.9719e-05 deg
tp 2458856.503106813532
(2020-Jan-08.00310681)
0.00012206 TDB
period 1482.00086392524
4.06
1.0892e-05
2.982e-08
d
yr
n .2429148381509717 1.7853e-09 deg/d
Q 2.745417565992847 1.3451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1333  
   data-arc span      10765 days (29.47 yr)  
   first obs. used      1990-11-08  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51885  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:01:43  

Additional Information
 Earth MOID = 1.44086 au 
 Jupiter MOID = 2.37914 au 
 T_jup = 3.340 
[ 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 14.5   n/a MPO319410  
diameter diameter 3.380 km 0.687 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26303 (1998 SD144)          Discovered 1998-Sep-18 by Elst, E. W. at La Silla
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SD144 = 1990 VJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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