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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 
[ 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 15.71   n/a MPCxxxxx  

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

[ 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
2106-May-08 11:03 00:02 Thisb 0.0359921761120089 0.035968069669558 0.0360162941684381 8.98117018192582 8.98117016083304 2490387.960643628 2.12912006181422 1577.10216401402 60.153227596008 -40.3662997793342 58023.5905763161 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 20:01:51 2021-Apr-13 20:01

Alternate Designations
 1998 RR4 = 2000 FY6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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