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85845 (1998 YP16)
Classification: Main-belt Asteroid          SPK-ID: 2085845
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2339798617659635 4.9414e-08  
a 2.352004337554595 8.2133e-09 au
q 1.801682687780625 1.1514e-07 au
i 6.191770808487884 3.6229e-06 deg
node 122.4924724666608 5.5357e-05 deg
peri 223.0890136129453 5.6434e-05 deg
M 89.80811935993856 1.0933e-05 deg
tp 2458671.823460609821
(2019-Jul-07.32346061)
3.9995e-05 TDB
period 1317.515109143307
3.61
6.9012e-06
1.889e-08
d
yr
n .2732416482374038 1.4313e-09 deg/d
Q 2.902325987328566 1.0135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      7705 days (21.10 yr)  
   first obs. used      1998-12-22  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:39  

Additional Information
 Earth MOID = .7998 au 
 Jupiter MOID = 2.51887 au 
 T_jup = 3.512 
[ 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 16.0   n/a MPO502667  

85845 (1998 YP16)          Discovered 1998-Dec-22 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 YP16 = 2001 QT282 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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