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175123 (2004 YY21)
Classification: Main-belt Asteroid          SPK-ID: 2175123
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671263791932869 4.1712e-08  
a 2.219444374715897 7.101e-09 au
q 1.84851667254872 9.3476e-08 au
i 5.877130889541525 2.7976e-06 deg
node 113.3828954249823 4.2718e-05 deg
peri 268.1116772984157 4.3923e-05 deg
M 15.45079086701805 8.7823e-06 deg
tp 2459148.666201313971
(2020-Oct-26.16620131)
2.9518e-05 TDB
period 1207.716011922932
3.31
5.796e-06
1.587e-08
d
yr
n .2980833212824646 1.4305e-09 deg/d
Q 2.590372076883073 8.2877e-09 au
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1999-03-20  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47114  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:07  

Additional Information
 Earth MOID = .861207 au 
 Jupiter MOID = 2.88169 au 
 T_jup = 3.626 
[ 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 16.9   n/a MPO436868  

175123 (2004 YY21)          Discovered 2004-Dec-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 2004 YY21 = 2000 QM223 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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