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JPL Small-Body Database Browser
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48164 (2001 HJ9)
Classification: Main-belt Asteroid          SPK-ID: 2048164
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709970795022819 4.4486e-08  
a 3.064908506558306 2.2395e-08 au
q 2.540818102995135 1.3903e-07 au
i 13.76323734585172 5.6002e-06 deg
node 52.08079598273568 2.0959e-05 deg
peri 278.6922467958598 2.6084e-05 deg
M 42.41841242047754 1.5504e-05 deg
tp 2458369.571992611794
(2018-Sep-08.07199261)
8.4196e-05 TDB
period 1959.858417983158
5.37
2.1481e-05
5.881e-08
d
yr
n .1836867381320673 2.0133e-09 deg/d
Q 3.588998910121477 2.6225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      960  
   data-arc span      9863 days (27.00 yr)  
   first obs. used      1992-11-24  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55188  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:32:36  

Additional Information
 Earth MOID = 1.57585 au 
 Jupiter MOID = 1.98247 au 
 T_jup = 3.167 
[ 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 14.0   n/a MPO459182  
diameter diameter 8.566 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48164 (2001 HJ9)          Discovered 2001-Apr-16 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-May-23 17:35 00:03 Jupiter 1.97058328126479 1.97058269569248 1.97058386683732 4.19161684753916 4.08778485153927 2421737.232854047 3.02977200596024 176.7379737824 23.2578237530359 -89.0289357926939 2101847.66352687 T 25 CATAB v2.0f-lin.ifort 2019-Dec-04 03:32:50 2019-Dec-04 03:32
1967-May-24 22:41 00:02 Jupiter 1.99803578739768 1.99803505896182 1.99803651583445 1.84663421666673 1.60068820524832 2439635.444941115 1.79826218147796 151.169931664005 22.7787869221452 -50.7014115562499 1756839.49178523 T 25 CATAB v2.0f-lin.ifort 2019-Dec-04 03:32:50 2019-Dec-04 03:32
2025-Oct-30 18:48 < 00:01 Jupiter 1.9778974046468 1.97789678466499 1.97789802462884 3.122860356565 2.98257757467715 2460979.283462017 0.549051631164702 70.7930534642252 14.7642399977456 -71.5348425866821 1984199.35140187 T 25 CATAB v2.0f-lin.ifort 2019-Dec-04 03:32:50 2019-Dec-04 03:32

Alternate Designations
 2001 HJ9 = 1999 BM18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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