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90146 (2002 YZ9)
Classification: Main-belt Asteroid          SPK-ID: 2090146
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1755430340378013 3.896e-08  
a 2.580328336982293 1.3206e-08 au
q 2.127369671894708 1.0469e-07 au
i 8.419045186252943 3.4007e-06 deg
node 91.65481705853691 3.442e-05 deg
peri 332.1236112226711 3.78e-05 deg
M 193.0655265392352 1.7472e-05 deg
tp 2460098.527969883276
(2023-Jun-03.02796988)
7.7279e-05 TDB
period 1513.947742000573
4.14
1.1623e-05
3.182e-08
d
yr
n .2377889209863253 1.8256e-09 deg/d
Q 3.033287002069879 1.5525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      8176 days (22.38 yr)  
   first obs. used      1999-02-10  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51294  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:55:16  

Additional Information
 Earth MOID = 1.14486 au 
 Jupiter MOID = 2.28115 au 
 T_jup = 3.388 
[ 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 15.49   n/a E2021B10  
diameter diameter 2.480 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.65017 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 0.218   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

90146 (2002 YZ9)          Discovered 2002-Dec-31 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 2002 YZ9 = 1999 CQ86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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