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JPL Small-Body Database Browser
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27154 (1998 YG7)
Classification: Main-belt Asteroid          SPK-ID: 2027154
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05340341509405779 4.302e-08  
a 3.055533624457049 2.2533e-08 au
q 2.892357693976318 1.3276e-07 au
i 9.936258475341663 5.2161e-06 deg
node 320.8105301392298 2.4879e-05 deg
peri 222.3119389669465 5.1833e-05 deg
M 303.2230048218124 4.5556e-05 deg
tp 2459308.179762396752
(2021-Apr-03.67976240)
0.00024738 TDB
period 1950.873132951287
5.34
2.158e-05
5.908e-08
d
yr
n .1845327581375786 2.0413e-09 deg/d
Q 3.21870955493778 2.3737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1571  
   data-arc span      8603 days (23.55 yr)  
   first obs. used      1996-07-14  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53083  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:58:06  

Additional Information
 Earth MOID = 1.90542 au 
 Jupiter MOID = 1.80838 au 
 T_jup = 3.210 
[ 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 13.5   n/a MPO459047  
diameter diameter 7.543 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.126 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.179   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27154 (1998 YG7)          Discovered 1998-Dec-22 by Kobayashi, T. at Oizumi
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YG7 = 1996 NA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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