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18897 (2000 HG30)
Classification: Main-belt Asteroid          SPK-ID: 2018897
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370700013923301 1.481e-08  
a 2.621567956127215 1.0816e-08 au
q 2.26222963273077 4.1554e-08 au
i 15.01275697276215 1.0952e-06 deg
node 101.0704660694384 1.2099e-06 deg
peri 192.0620514178423 7.3114e-06 deg
M 292.1709629447623 1.0298e-05 deg
tp 2459688.614595891888
(2022-Apr-19.11459589)
4.5223e-05 TDB
period 1550.386959429188
4.24
9.5948e-06
2.627e-08
d
yr
n .2322000954732892 1.437e-09 deg/d
Q 2.980906279523661 1.2298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2915  
   data-arc span      25435 days (69.64 yr)  
   first obs. used      1951-11-08  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40688  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:43:41  

Additional Information
 Earth MOID = 1.24744 au 
 Jupiter MOID = 2.19991 au 
 T_jup = 3.343 
[ 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 12.65   n/a MPCxxxxx  
diameter diameter 9.156 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 25.0282 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 0.231   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

18897 (2000 HG30)          Discovered 2000-Apr-28 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 HG30 = 1978 EX3 = 1983 GY1 = 1987 HP = 1999 CW83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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