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27605 (2001 HN9)
Classification: Main-belt Asteroid          SPK-ID: 2027605
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0835012895384354 3.4832e-08  
a 2.986532498331502 1.8143e-08 au
q 2.737153183472376 1.0531e-07 au
i 11.88753272826678 4.3298e-06 deg
node 68.92953369125583 2.2731e-05 deg
peri 223.7120167878821 4.4159e-05 deg
M 231.1074853791455 4.1015e-05 deg
tp 2459875.454489038038
(2022-Oct-22.95448904)
0.00021672 TDB
period 1885.164679798864
5.16
1.7179e-05
4.703e-08
d
yr
n .1909647490522737 1.7402e-09 deg/d
Q 3.235911813190627 1.9658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1526  
   data-arc span      9050 days (24.78 yr)  
   first obs. used      1996-06-13  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:06:00  

Additional Information
 Earth MOID = 1.73254 au 
 Jupiter MOID = 1.89976 au 
 T_jup = 3.220 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457168.5 (2015-May-26.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08426545804854357 3.502e-08  
q 2.736655697431112 1.0622e-07 au
tp 2457980.759234887759
(2017-Aug-15.25923489)
0.00020879 TDB
node 69.12867555957904 2.2742e-05 deg
peri 221.7592244980175 4.3635e-05 deg
i 11.88438697985782 4.3257e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1526  
   data-arc span      9050 days (24.78 yr)  
   first obs. used      1996-06-13  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:06:00  

Additional Information
 Jupiter MOID = 1.89976 au 
 T_jup = 3.220 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.226411775469134E-15 -3.673080885105987E-15 -3.099071217893277E-14 -3.35481449502906E-15 1.262011561156807E-14 1.29624990208022E-15
q -3.673080885105987E-15 1.128334928535006E-14 1.183931668562648E-12 1.54710438838878E-14 1.306965405031442E-13 -4.12347716771885E-15
tp -3.099071217893277E-14 1.183931668562648E-12 4.359533310274727E-8 9.930029327487576E-12 7.803811345005417E-9 2.309898484893303E-11
node -3.35481449502906E-15 1.54710438838878E-14 9.930029327487576E-12 5.171821709303634E-10 -5.042357293980786E-10 -2.069766105014531E-11
peri 1.262011561156807E-14 1.306965405031442E-13 7.803811345005417E-9 -5.042357293980786E-10 1.903972134067049E-9 2.443727136642094E-11
i 1.29624990208022E-15 -4.12347716771885E-15 2.309898484893303E-11 -2.069766105014531E-11 2.443727136642094E-11 1.871167546819858E-11

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 13.57   n/a MPCxxxxx  
diameter diameter 6.218 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.4988 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 0.240   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27605 (2001 HN9)          Discovered 2001-Apr-16 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HN9 = 1998 XG68 = 2000 EG116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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