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22252 (1978 SG)
Classification: Main-belt Asteroid          SPK-ID: 2022252
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2388219750481493 3.7025e-08  
a 2.259406947891358 8.3071e-09 au
q 1.719810918158433 8.1774e-08 au
i 7.508906723017397 4.3647e-06 deg
node 345.8014598524787 2.6106e-05 deg
peri 308.8539096910145 2.7703e-05 deg
M 181.2639769337594 1.1756e-05 deg
tp 2459816.385112887685
(2022-Aug-24.88511289)
4.2382e-05 TDB
period 1240.481000057813
3.40
6.8413e-06
1.873e-08
d
yr
n .2902100072336635 1.6005e-09 deg/d
Q 2.799002977624283 1.0291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1422  
   data-arc span      25411 days (69.57 yr)  
   first obs. used      1951-08-11  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:02:50  

Additional Information
 Earth MOID = .714253 au 
 Jupiter MOID = 2.45104 au 
 T_jup = 3.572 
[ 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 15.03   n/a E2021B10  
diameter diameter 2.273 km 0.513 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.411   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22252 (1978 SG)          Discovered 1978-Sep-27 by West, R. M. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1978 SG = 1985 TF2 = 1998 FB126 = 1999 XZ184 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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