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 ]  
160031 (1998 HD48)
Classification: Main-belt Asteroid          SPK-ID: 2160031
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554050130859423 3.4332e-08  
a 2.605997676754507 1.6448e-08 au
q 2.201012573696538 8.3798e-08 au
i 4.607446367840993 4.4651e-06 deg
node 126.35605130 7.7223e-05 deg
peri 146.0810165691134 8.0715e-05 deg
M 131.2919401784465 2.3575e-05 deg
tp 2458836.103997555369
(2019-Dec-18.60399756)
0.00010103 TDB
period 1536.595168034437
4.21
1.4547e-05
3.983e-08
d
yr
n .2342842197405192 2.218e-09 deg/d
Q 3.010982779812477 1.9004e-08 au
  Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      8323 days (22.79 yr)  
   first obs. used      1998-03-25  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57579  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:59:37  

Additional Information
 Earth MOID = 1.1864 au 
 Jupiter MOID = 2.09899 au 
 T_jup = 3.390 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457989.5 (2017-Aug-24.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551205438915168 3.4217e-08  
q 2.202500948099057 8.3409e-08 au
tp 2457300.213030033413
(2015-Oct-04.71303003)
0.00010431 TDB
node 126.37353604354 7.7287e-05 deg
peri 146.4053945548095 8.0807e-05 deg
i 4.605174918283172 4.4611e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      8323 days (22.79 yr)  
   first obs. used      1998-03-25  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57579  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:59:37  

Additional Information
 Jupiter MOID = 2.09899 au 
 T_jup = 3.390 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.170810605001295E-15 -2.82268529008889E-15 -1.187365916351735E-12 -2.759449138072263E-14 -2.765794472178494E-13 -1.415025555687896E-15
q -2.82268529008889E-15 6.957094813398813E-15 2.706481961484823E-12 6.55856543948719E-14 6.47068747268776E-13 3.491705604517321E-15
tp -1.187365916351735E-12 2.706481961484823E-12 1.088061489327512E-8 2.019456548670955E-10 2.528193785757997E-9 5.876996691979884E-12
node -2.759449138072263E-14 6.55856543948719E-14 2.019456548670955E-10 5.973331414952631E-9 -5.903255837871375E-9 1.956287692453836E-10
peri -2.765794472178494E-13 6.47068747268776E-13 2.528193785757997E-9 -5.903255837871375E-9 6.529796075668687E-9 -1.935240684341526E-10
i -1.415025555687896E-15 3.491705604517321E-15 5.876996691979884E-12 1.956287692453836E-10 -1.935240684341526E-10 1.990120468332956E-11

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 15.95   n/a E2021B55  

160031 (1998 HD48)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

[ show close-approach data ]
Alternate Designations
 1998 HD48 = 2002 EG29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-30 08:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin