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19501 (1998 KC50)
Classification: Main-belt Asteroid          SPK-ID: 2019501
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219776752579328 1.7906e-08  
a 3.129859101660756 1.7469e-08 au
q 2.748086164555295 5.8437e-08 au
i 16.89763786584222 6.4085e-07 deg
node 91.50621796872902 4.4041e-06 deg
peri 195.7340361173846 1.318e-05 deg
M 344.4500652073705 9.6797e-06 deg
tp 2459287.859809638642
(2021-Mar-14.35980964)
5.4522e-05 TDB
period 2022.48638912736
5.54
1.6932e-05
4.636e-08
d
yr
n .1779987256949249 1.4902e-09 deg/d
Q 3.511632038766218 1.96e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2114  
   data-arc span      15722 days (43.04 yr)  
   first obs. used      1977-08-21  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:55:57  

Additional Information
 Earth MOID = 1.73322 au 
 Jupiter MOID = 1.64559 au 
 T_jup = 3.136 
[ 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 12.41   n/a MPCxxxxx  
diameter diameter 14.706 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.13015 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.068   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19501 (1998 KC50)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20001211/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
1907-Jun-29 19:17 00:03 Jupiter 1.82130095705154 1.82129918388581 1.82130273024542 4.22363362506929 4.1120495981422 2417756.303490793 2.72175745191461 373.547088003147 5.84892731458721 -76.1501718727092 15492367.1028263 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
1917-Dec-19 19:20 00:02 Jupiter 1.69544146742036 1.69544061014066 1.69544232470527 4.07172596366765 3.94712249241593 2421582.305770779 2.48295089273425 171.2297115947 17.927398656545 75.6840610883416 10751832.2782615 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
1990-Oct-15 14:14 < 00:01 Jupiter 1.90449217130096 1.90449160121227 1.90449274139094 4.09461575324034 3.98451735695803 2448180.093055618 0.69781072651751 87.4218512616602 6.5880900839764 -71.1655411456068 14583121.6417565 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
2001-Apr-05 03:50 < 00:01 Jupiter 1.65515541536212 1.65515519618548 1.65515563453877 4.1989856275966 4.07528946889589 2452004.659399668 0.387433639372075 47.915060107122 9.94188325715083 -86.149240304916 12006942.1057209 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
2084-Jul-18 08:27 00:02 Jupiter 1.65029861026242 1.65029841921962 1.65029880130521 4.26651227190031 4.14446845646699 2482424.852242919 1.65226092290109 193.768109949369 8.9990100439681 -89.9886589006679 11998595.8732538 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
2094-Nov-28 09:59 00:02 Jupiter 1.97589944900438 1.97589800676674 1.97590089128761 3.5947325856601 3.47343468357304 2486209.916115773 2.37513604095431 488.715895058292 4.24114749300962 -81.0115569521443 7216011.38701272 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
2167-Oct-31 14:15 00:04 Jupiter 1.66492589182402 1.66492510413582 1.66492667956683 4.26672835916312 4.14577871396916 2512844.093932783 3.6501313188228 492.817236569876 6.85790856403422 -85.4101783123163 12905300.3599881 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57
2178-Apr-03 17:08 00:05 Jupiter 1.8841630090818 1.88416018123327 1.88416583697926 3.8844651658576 3.76695802696725 2516651.213560067 4.60315928837566 507.244171343868 7.97509134535759 -72.9861494901311 8673724.50320784 T 35 CATAB v2.0f-lin.ifort 2021-Apr-13 02:57:09 2021-Apr-13 02:57

Alternate Designations
 1998 KC50 = 1987 LD = 1999 SA6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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