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46242 (2001 HQ12)
Classification: Main-belt Asteroid          SPK-ID: 2046242
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03227614533412317 4.8004e-08  
a 3.081284401529566 2.2986e-08 au
q 2.981832418370031 1.5717e-07 au
i 9.89377001058644 5.6343e-06 deg
node 214.4514924755364 2.5348e-05 deg
peri 297.1444548780839 8.8681e-05 deg
M 329.2831847214132 8.5723e-05 deg
tp 2459565.065925830601
(2021-Dec-16.56592583)
0.00047044 TDB
period 1975.586751056184
5.41
2.2107e-05
6.053e-08
d
yr
n .1822243441385389 2.0391e-09 deg/d
Q 3.180736384689101 2.3728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      968  
   data-arc span      8149 days (22.31 yr)  
   first obs. used      1998-11-11  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:22:33  

Additional Information
 Earth MOID = 2.0042 au 
 Jupiter MOID = 1.82717 au 
 T_jup = 3.204 
[ 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 14.38   n/a MPCxxxxx  
diameter diameter 4.893 km 0.318 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.86 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.185   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46242 (2001 HQ12)          Discovered 2001-Apr-18 by LINEAR at Socorro
Reference: 20020822/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
1927-Oct-01 12:30 00:03 Jupiter 1.88663225968467 1.88663149298744 1.8866330263865 3.67216545772546 3.54779918422289 2425155.021125197 3.04029753618113 202.702532062146 22.1580413409741 -80.0929036785019 2593293.35861766 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
1987-Jun-17 05:29 < 00:01 Jupiter 1.85880090116169 1.85880038766592 1.85880141465745 3.93773905555807 3.82026496993078 2446963.728555779 0.977774266721976 81.9993618245259 22.270650938673 -85.0910284542318 2737353.40216506 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
2047-Feb-26 10:02 00:01 Jupiter 1.85474622857157 1.85474573174569 1.85474672539745 4.14080700628549 4.02901053541805 2468767.918389462 1.02426273841075 89.0837850014405 22.2646890116026 88.9964989612833 2894707.20562601 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
2106-Nov-06 07:09 00:03 Jupiter 1.87787266868849 1.87787192471415 1.87787341266881 4.27254622837465 4.16563833122185 2490569.797817398 2.94658930389035 230.240307963224 22.6236728725961 83.595628104996 3075511.07002232 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
2116-Sep-08 15:14 00:04 Jupiter 1.98939094450109 1.98938989218655 1.98939199682005 3.29839791272941 3.1666842697878 2494164.134840634 3.6222562411 175.561131493064 17.5359606414293 -71.9515051102037 2975813.24346612 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
2166-Jul-15 19:36 00:05 Jupiter 1.92732640359041 1.92732483570993 1.9273279714904 4.33578207769276 4.23320742231709 2512371.316907159 4.87780727448586 335.897459678678 23.7721361739935 77.5448518801312 3250874.14113878 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
2176-May-31 00:53 00:06 Jupiter 1.92984111626074 1.92983964719279 1.92984258534635 3.50413239133233 3.37655564392857 2515978.536663590 5.62255430180321 322.58898691676 20.5211422833929 -75.1732798543111 2697632.03790145 T 24 CATAB v2.0g-lin.ifort 2021-Jul-08 21:22:38 2021-Jul-08 21:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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