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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712748078951761 4.1738e-08  
a 3.065965386375138 2.033e-08 au
q 2.540842753810477 1.2794e-07 au
i 13.75960261594206 4.5641e-06 deg
node 52.06695441367822 1.979e-05 deg
peri 278.8344044206283 2.3627e-05 deg
M 152.4237994457642 1.4772e-05 deg
tp 2458370.267786208599
(2018-Sep-08.76778621)
7.7802e-05 TDB
period 1960.872239451385
5.37
1.9503e-05
5.34e-08
d
yr
n .1835917673558993 1.8261e-09 deg/d
Q 3.591088018939799 2.3812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1087  
   data-arc span      10287 days (28.16 yr)  
   first obs. used      1992-11-24  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52488  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 04:54:59  

Additional Information
 Earth MOID = 1.5749 au 
 Jupiter MOID = 1.98333 au 
 T_jup = 3.166 
[ 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)  
rotation period rot_per 86.0116 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 0.055   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 1.97058353135495 1.97058297888638 1.97058408382408 4.19161894401516 4.08778701461174 2421737.232844214 2.76259933309328 159.911017843474 21.2623532846641 89.7341585500844 2436962.7294073 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 04:55:01 2021-Feb-24 04:55
1967-May-24 22:41 00:02 Jupiter 1.99803603447909 1.99803541811858 1.99803665084028 1.84663489589446 1.60068902159022 2439635.444856072 1.68130768956294 140.018058043218 21.7600049872049 -50.5515783648419 1933262.40684662 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 04:55:01 2021-Feb-24 04:55
2025-Oct-30 18:48 < 00:01 Jupiter 1.97789767768067 1.97789715612693 1.97789819923464 3.12286272236314 2.98258007156871 2460979.283307496 0.423433274560829 60.0199388442416 12.3981864974146 -69.9293406126336 2357536.57312696 T 32 CATAB v2.0f-lin.ifort 2021-Feb-24 04:55:01 2021-Feb-24 04:55

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