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 ]  
74189 (1998 RM43)
Classification: Main-belt Asteroid          SPK-ID: 2074189
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1989375296645617 5.823e-08  
a 2.706351313440835 1.5893e-08 au
q 2.167956468740473 1.565e-07 au
i 2.553985699853465 6.0781e-06 deg
node 238.6946001691731 9.2603e-05 deg
peri 173.4141880358771 9.3186e-05 deg
M 276.732228874745 1.0351e-05 deg
tp 2459376.639656766412
(2021-Jun-11.13965677)
4.7798e-05 TDB
period 1626.202726529312
4.45
1.4325e-05
3.922e-08
d
yr
n .2213746134642894 1.95e-09 deg/d
Q 3.244746158141196 1.9054e-08 au
  Orbit Determination Parameters
   # obs. used (total)      661  
   data-arc span      15594 days (42.69 yr)  
   first obs. used      1976-10-24  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:12:25  

Additional Information
 Earth MOID = 1.17897 au 
 Jupiter MOID = 2.1281 au 
 T_jup = 3.335 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO436302  
diameter diameter 4.511 km 0.714 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 10.67 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]
geometric albedo albedo 0.050   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

74189 (1998 RM43)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RM43 = 1976 UD20 = 2000 EY58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-10 16:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin