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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
40018 (1998 HH134)
Classification: Main-belt Asteroid          SPK-ID: 2040018
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08215969724895264 3.1773e-08  
a 2.385229446680605 1.0216e-08 au
q 2.18925971747204 7.7178e-08 au
i 6.03839567580829 4.1668e-06 deg
node 125.2961577648085 3.566e-05 deg
peri 318.3056500359685 4.5922e-05 deg
M 358.1601092401498 2.7372e-05 deg
tp 2458607.376749551940
(2019-May-03.87674955)
0.0001023 TDB
period 1345.530882985666
3.68
8.644e-06
2.367e-08
d
yr
n .2675523873529964 1.7188e-09 deg/d
Q 2.581199175889171 1.1055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1282  
   data-arc span      8021 days (21.96 yr)  
   first obs. used      1997-12-08  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55358  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 02:34:27  

Additional Information
 Earth MOID = 1.20963 au 
 Jupiter MOID = 2.56398 au 
 T_jup = 3.524 
[ 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 14.8   n/a MPO263680  
diameter diameter 2.693 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.154   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

40018 (1998 HH134)          Discovered 1998-Apr-19 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HH134 = 1999 NK33 = 2000 WY48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-24 14:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin