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 ]  
160556 (1998 RR4)
Classification: Main-belt Asteroid          SPK-ID: 2160556
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2562370917426064 5.3621e-08  
a 2.724849508101324 1.8808e-08 au
q 2.026641994709169 1.466e-07 au
i 17.29720529506099 5.5842e-06 deg
node 161.9552494344511 1.897e-05 deg
peri 230.329777553605 2.1133e-05 deg
M 320.6906247848392 1.1364e-05 deg
tp 2459379.893147372438
(2021-Jun-14.39314737)
5.2967e-05 TDB
period 1642.904083328444
4.50
1.701e-05
4.657e-08
d
yr
n .2191241738657423 2.2687e-09 deg/d
Q 3.423057021493479 2.3628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      7598 days (20.80 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61209  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:50  

Additional Information
 Earth MOID = 1.06987 au 
 Jupiter MOID = 2.17782 au 
 T_jup = 3.245 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457233.5 (2015-Jul-30.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2588784249954819 5.3591e-08  
q 2.017270072491084 1.4684e-07 au
tp 2457738.972740405204
(2016-Dec-16.47274041)
4.4322e-05 TDB
node 162.1218860707477 1.899e-05 deg
peri 230.3980579415491 2.1094e-05 deg
i 17.29527606388307 5.5871e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      7598 days (20.80 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61209  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:50  

Additional Information
 Jupiter MOID = 2.17782 au 
 T_jup = 3.245 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.872007695365738E-15 -7.835229562715808E-15 -4.737329215991893E-13 1.884335142441301E-14 -7.770785491608659E-14 3.554491831799635E-15
q -7.835229562715808E-15 2.156068447498949E-14 1.493320195528855E-12 -5.401278479963455E-14 2.356926389890563E-13 -7.606352670541055E-15
tp -4.737329215991893E-13 1.493320195528855E-12 1.96441238837546E-9 -2.568640954839797E-11 4.445449369437595E-10 2.715761874014014E-12
node 1.884335142441301E-14 -5.401278479963455E-14 -2.568640954839797E-11 3.606331359512901E-10 -3.480454807758923E-10 2.3511669630521E-11
peri -7.770785491608659E-14 2.356926389890563E-13 4.445449369437595E-10 -3.480454807758923E-10 4.449541613755679E-10 -2.194792792062239E-11
i 3.554491831799635E-15 -7.606352670541055E-15 2.715761874014014E-12 2.3511669630521E-11 -2.194792792062239E-11 3.121551417564102E-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 15.71   n/a MPCxxxxx  

160556 (1998 RR4)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 1998 RR4 = 2000 FY6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-06 14:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin