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32804 (1990 SO2)
Classification: Main-belt Asteroid          SPK-ID: 2032804
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2211666461547713 2.4738e-08  
a 2.304183332951832 6.3276e-09 au
q 1.794574833077153 5.7186e-08 au
i 6.896893921804492 2.9431e-06 deg
node 111.7793519377835 2.6698e-05 deg
peri 194.6815382859982 2.7737e-05 deg
M 329.8715013262473 8.0266e-06 deg
tp 2459503.417541384406
(2021-Oct-15.91754138)
2.8569e-05 TDB
period 1277.538430148134
3.50
5.2624e-06
1.441e-08
d
yr
n .2817919144383446 1.1608e-09 deg/d
Q 2.813791832826512 7.7271e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1888  
   data-arc span      11244 days (30.78 yr)  
   first obs. used      1990-09-17  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:04:47  

Additional Information
 Earth MOID = .779927 au 
 Jupiter MOID = 2.44 au 
 T_jup = 3.547 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.49   n/a MPO614063  
diameter diameter 3.280 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.31891 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.343   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32804 (1990 SO2)          Discovered 1990-Sep-17 by Holt, H. E. at Palomar
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 SO2 = 2000 KQ50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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