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
JPL Small-Body Database Browser
Search: [ help ]  
74056 (1998 KM9)
Classification: Main-belt Asteroid          SPK-ID: 2074056
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07441189790031733 3.2401e-08  
a 2.374810912088609 9.5688e-09 au
q 2.198096724965712 7.6165e-08 au
i 7.535062493023711 3.5509e-06 deg
node 136.9750095387643 2.9402e-05 deg
peri 339.4198113449536 3.9309e-05 deg
M 134.4607115130677 2.6126e-05 deg
tp 2458501.230673914700
(2019-Jan-17.73067391)
9.6763e-05 TDB
period 1336.724723290193
3.66
8.0791e-06
2.212e-08
d
yr
n .2693149858961998 1.6277e-09 deg/d
Q 2.551525099211506 1.0281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1024  
   data-arc span      25633 days (70.18 yr)  
   first obs. used      1950-05-10  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52515  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:10:23  

Additional Information
 Earth MOID = 1.21568 au 
 Jupiter MOID = 2.49562 au 
 T_jup = 3.527 
[ 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 15.5   n/a MPO474626  
diameter diameter 2.418 km 0.754 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 17.4 h n/a LCDB (Rev. 2019-August); 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:
[Galad, A.; Kornos, L. (2008) Minor Planet Bull. 35, 144-146.]
geometric albedo albedo 0.276   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74056 (1998 KM9)          Discovered 1998-May-28 by Comba, P. G. at Prescott
Reference: 20040415/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
2109-Feb-11 07:45 < 00:01 Amphi 0.0334824102192866 0.0334719239037607 0.0334928990637263 4.22542103355868 4.22542099292498 2491397.822662854 0.548670572913644 695.93468856289 30.0693503248913 41.3581269744256 110147.74822727 T 22 CATAB v2.0f-lin.ifort 2020-Aug-25 07:10:39 2020-Aug-25 07:10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-28 15:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin