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163899 (2003 SD220)
Classification: Aten [NEO, PHA]          SPK-ID: 2163899
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 130 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .210630926680507 5.5336e-09  
a .8266938240431345 1.636e-09 au
q .6525665378038771 4.6178e-09 au
i 8.514584648169263 3.6243e-07 deg
node 273.9141780590759 2.4077e-06 deg
peri 326.9339684227411 4.1352e-06 deg
M 351.7683360986091 4.7005e-06 deg
tp 2459402.777700549775
(2021-Jul-07.27770055)
3.597e-06 TDB
period 274.5462187222309
0.75
8.1497e-07
2.231e-09
d
yr
n 1.31125462836633 3.8924e-09 deg/d
Q 1.000821110282392 1.9806e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1222  
   # delay obs. used      9  
   # Doppler obs. used      4  
   data-arc span      7786 days (21.32 yr)  
   first obs. used      2000-01-06  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .22637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-13 05:50:33  

Additional Information
 Earth MOID = .0181074 au 
 Jupiter MOID = 4.00269 au 
 T_jup = 7.065 
[ 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 17.66   n/a MPCxxxxx  
diameter diameter 0.791 km 0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 285. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2016) Minor Planet Bull. 43, 143-154.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
geometric albedo albedo 0.340   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

163899 (2003 SD220)          Discovered 2003-Sep-29 by LONEOS at Anderson Mesa
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

[ show close-approach data ]
Alternate Designations
 2003 SD220 = 2000 AD229 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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