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120809 (1998 HU7)
Classification: Main-belt Asteroid          SPK-ID: 2120809
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1951071729546596 3.8217e-08  
a 2.54656185703003 1.1491e-08 au
q 2.049709372350732 9.723e-08 au
i 5.947832259840167 4.9592e-06 deg
node 23.82937693755748 3.6767e-05 deg
peri 205.388626949726 3.9711e-05 deg
M 192.329559582933 1.8134e-05 deg
tp 2459891.827409444702
(2022-Nov-08.32740944)
7.7892e-05 TDB
period 1484.327629730254
4.06
1.0047e-05
2.751e-08
d
yr
n .2425340556824524 1.6416e-09 deg/d
Q 3.043414341709327 1.3733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      8370 days (22.92 yr)  
   first obs. used      1998-03-03  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57418  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:14  

Additional Information
 Earth MOID = 1.04057 au 
 Jupiter MOID = 1.95345 au 
 T_jup = 3.408 
[ 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 15.68   n/a E2021B55  
diameter diameter 1.831 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.365   0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120809 (1998 HU7)          Discovered 1998-Apr-21 by Visnjan at Visnjan
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ 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
1975-Sep-25 10:10 < 00:01 Jupiter 1.98795773716577 1.9879571527461 1.98795832158905 2.48658248652262 2.30888263523885 2442680.923526624 0.868553851202225 160.982819094074 15.2276980759742 -86.0100256999388 2243556.6624133 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:16 2021-Apr-13 17:08
1988-Feb-22 13:23 < 00:01 Jupiter 1.9362680412244 1.9362676903553 1.93626839209481 2.16227098850463 1.94949062668771 2447214.057550952 0.590313891504219 126.426782998683 24.1562184683625 -85.4280348677925 2002826.10655984 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:16 2021-Apr-13 17:08
2000-Jul-22 23:32 < 00:01 Jupiter 1.98055185526796 1.9805515053722 1.98055220516406 2.03946816647079 1.81771573791124 2451748.480698372 0.347305802158121 82.5923636476596 21.8980767530394 -80.8774605553143 2385261.55495198 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:16 2021-Apr-13 17:08
2118-Feb-14 19:13 00:02 Jupiter 1.99520873072014 1.99520808635943 1.99520937508687 2.5021921170957 2.32635097319096 2494688.300913193 1.75654468753128 204.457871018803 14.8831713827116 -86.7176346658522 2313025.57302681 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:16 2021-Apr-13 17:08
2130-Jul-16 23:10 00:02 Jupiter 1.93755845427486 1.93755810057886 1.93755880797207 2.13149637025034 1.91545225380905 2499223.465106470 1.99130759460205 130.348800195734 31.6664092261514 -89.6523399831498 1922052.73535586 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:16 2021-Apr-13 17:08
2142-Dec-15 20:42 00:02 Jupiter 1.98559799459112 1.98559729932094 1.98559868986277 2.00041062927074 1.77439469192244 2503758.362581431 2.28103185596807 115.685227490774 26.6831166938269 -74.0022475975929 2414131.41430666 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 17:08:16 2021-Apr-13 17:08

Alternate Designations
 1998 HU7 = 2002 CD112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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