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85839 (1998 YO4)
Classification: Amor [NEO]          SPK-ID: 2085839
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 313 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2480644818472046 3.7346e-08  
a 1.653843331252787 5.2659e-09 au
q 1.24358354222911 6.1437e-08 au
i 9.321958796234346 4.3143e-06 deg
node 28.5319620186598 1.8153e-05 deg
peri 199.5964585481123 2.105e-05 deg
M 73.70619749450316 1.7629e-05 deg
tp 2459237.447140196589
(2021-Jan-22.94714020)
3.7419e-05 TDB
period 776.8550200069448
2.13
3.7103e-06
1.016e-08
d
yr
n .4634069301589656 2.2132e-09 deg/d
Q 2.064103120276465 6.5721e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1485  
   data-arc span      10379 days (28.42 yr)  
   first obs. used      1993-04-25  
   last obs. used      2021-09-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-25 05:52:58  

Additional Information
 Earth MOID = .241134 au 
 Jupiter MOID = 2.92327 au 
 T_jup = 4.224 
[ 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 16.48   n/a MPCxxxxx  
diameter diameter 1.140 km 0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 2.45 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
geometric albedo albedo 0.405   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

85839 (1998 YO4)          Discovered 1998-Dec-17 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 YO4 = 1993 HZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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