Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
146308 (2001 KJ28)
Classification: Main-belt Asteroid          SPK-ID: 2146308
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3010841808301821 4.9074e-08  
a 2.560386806894748 1.3737e-08 au
q 1.789494842532438 1.278e-07 au
i 6.390467374247636 3.6119e-06 deg
node 92.80295596740027 4.0053e-05 deg
peri 245.4029318545021 4.073e-05 deg
M 260.5088786351296 8.4937e-06 deg
tp 2459810.060091736892
(2022-Aug-18.56009174)
3.6225e-05 TDB
period 1496.431349680718
4.10
1.2043e-05
3.297e-08
d
yr
n .2405723457189068 1.9361e-09 deg/d
Q 3.331278771257059 1.7873e-08 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      7303 days (19.99 yr)  
   first obs. used      2001-05-18  
   last obs. used      2021-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56275  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:03:08  

Additional Information
 Earth MOID = .790951 au 
 Jupiter MOID = 2.09572 au 
 T_jup = 3.362 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457525.5 (2016-May-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3018141230960148 4.9348e-08  
q 1.788578229404942 1.2862e-07 au
tp 2456812.971868268719
(2014-Jun-04.47186827)
3.6087e-05 TDB
node 93.03813480074055 4.0064e-05 deg
peri 244.8420926208287 4.0729e-05 deg
i 6.389318275892436 3.6076e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      7303 days (19.99 yr)  
   first obs. used      2001-05-18  
   last obs. used      2021-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56275  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:03:08  

Additional Information
 Jupiter MOID = 2.09572 au 
 T_jup = 3.362 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.435261616114349E-15 -6.330610980384328E-15 1.210403110735647E-12 -3.688028340777847E-14 2.205225959564734E-13 -5.745013851955975E-15
q -6.330610980384328E-15 1.654386824276893E-14 -3.212607799274157E-12 9.917875109520971E-14 -5.819485581880471E-13 1.501295884298771E-14
tp 1.210403110735647E-12 -3.212607799274157E-12 1.302242037888192E-9 -2.74206405474345E-11 2.893991805915909E-10 -4.443816206163229E-12
node -3.688028340777847E-14 9.917875109520971E-14 -2.74206405474345E-11 1.60510775427372E-9 -1.599644685072482E-9 -3.270328979560381E-11
peri 2.205225959564734E-13 -5.819485581880471E-13 2.893991805915909E-10 -1.599644685072482E-9 1.65883190366085E-9 3.163777812209759E-11
i -5.745013851955975E-15 1.501295884298771E-14 -4.443816206163229E-12 -3.270328979560381E-11 3.163777812209759E-11 1.301496928140173E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.75   n/a E2021B55  
rotation period rot_per 3.22993 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.]

146308 (2001 KJ28)          Discovered 2001-May-18 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-22 08:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin