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22295 (1989 SZ9)
Classification: Main-belt Asteroid          SPK-ID: 2022295
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1591644890540844 2.1218e-08  
a 2.382390561266236 7.4935e-09 au
q 2.003198584855022 5.2144e-08 au
i 12.26721158026867 9.7781e-07 deg
node 2.257867521873086 2.4013e-06 deg
peri 215.2316051199406 3.6758e-06 deg
M 305.1858426535823 5.6943e-06 deg
tp 2459405.006967035761
(2021-Jul-09.50696704)
2.1774e-05 TDB
period 1343.129434018113
3.68
6.3369e-06
1.735e-08
d
yr
n .2680307577826078 1.2646e-09 deg/d
Q 2.761582537677449 8.6862e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3251  
   data-arc span      15505 days (42.45 yr)  
   first obs. used      1978-10-02  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:48  

Additional Information
 Earth MOID = 1.00943 au 
 Jupiter MOID = 2.24047 au 
 T_jup = 3.490 
[ 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 13.66   n/a E2021B10  
diameter diameter 7.129 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.80 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:
[Brinsfield, J.W. (2010) Minor Planet Bull. 37, 146-147.]
geometric albedo albedo 0.185   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

22295 (1989 SZ9)          Discovered 1989-Sep-26 by Debehogne, H. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 SZ9 = 1978 TK1 = 1999 EJ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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