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17850 (1998 HR150)
Classification: Main-belt Asteroid          SPK-ID: 2017850
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142561035406845 2.0612e-08  
a 2.685920242835028 1.1242e-08 au
q 2.303012671996262 5.4888e-08 au
i 12.47374258393393 8.4667e-07 deg
node 206.1967952414291 2.0273e-06 deg
peri 252.0823178858893 4.4265e-06 deg
M 164.8099044135824 6.8916e-06 deg
tp 2458464.430365121225
(2018-Dec-11.93036512)
2.7719e-05 TDB
period 1607.822475834899
4.40
1.0094e-05
2.764e-08
d
yr
n .2239053162962295 1.4057e-09 deg/d
Q 3.068827813673794 1.2844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1881  
   data-arc span      15267 days (41.80 yr)  
   first obs. used      1978-11-01  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48857  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:15:21  

Additional Information
 Earth MOID = 1.35431 au 
 Jupiter MOID = 2.25364 au 
 T_jup = 3.326 
[ 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 13.57   n/a E2021B10  
diameter diameter 4.950 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.446 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 0.345   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17850 (1998 HR150)          Discovered 1998-Apr-20 by Spacewatch at Kitt Peak
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HR150 = 1978 VD16 = 1995 QT7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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