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 ]  
9870 Maehata (1992 DA)
Classification: Main-belt Asteroid          SPK-ID: 2009870
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663979377821566 4.3391e-08  
a 2.342540130906378 7.8545e-09 au
q 1.952746283951614 1.0341e-07 au
i 3.703700243565755 4.0573e-06 deg
node 27.52540773480252 4.9233e-05 deg
peri 164.425659476602 5.0359e-05 deg
M 290.2350249731634 1.33e-05 deg
tp 2459254.283819155216
(2021-Feb-08.78381916)
4.9006e-05 TDB
period 1309.57081057842
3.59
6.5865e-06
1.803e-08
d
yr
n .2748992243046353 1.3826e-09 deg/d
Q 2.732333977861143 9.1615e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2067  
   data-arc span      23967 days (65.62 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53343  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:15:24  

Additional Information
 Earth MOID = .952695 au 
 Jupiter MOID = 2.22249 au 
 T_jup = 3.542 
[ 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 13.9   n/a MPO452309  
diameter diameter 4.135 km 0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.358   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

9870 Maehata           Discovered 1992 Feb. 24 by T. Seki at Geisei.
Hideko Maehata (née Hideco Hyodo, 1914-1995), born in Hashimoto city, Wakayama Prefecture, won the gold medal for the 200-m breast-stroke event in the 1936 Olympuic Games in Berlin. She was the first Japanese female Olympic gold medalist.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

[ 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
2015-Feb-03 09:08 < 00:01 Amphi 0.0015302543454591 0.00152901583450505 0.00153149286230426 4.07753084744876 4.07752992612513 2457056.880732780 0.252949105270875 62.1340657481936 45.9186333920608 -9.73649879076723 3724.30203454656 T 26 CATAB v2.0f-lin.ifort 2020-May-20 03:15:35 2020-May-20 03:15

Alternate Designations
 1992 DA = 1974 DW = 1979 SM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-16 18:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin