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46954 (1998 SL121)
Classification: Main-belt Asteroid          SPK-ID: 2046954
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637431283561324 5.2907e-08  
a 2.809269136466239 1.5393e-08 au
q 2.349270619666927 1.4794e-07 au
i 11.93551427514719 6.4247e-06 deg
node 215.9748848166803 1.7651e-05 deg
peri 192.8941323617157 2.1498e-05 deg
M 192.814302407633 1.2538e-05 deg
tp 2459799.202547489757
(2022-Aug-07.70254749)
6.2729e-05 TDB
period 1719.841596721848
4.71
1.4136e-05
3.87e-08
d
yr
n .2093216030395986 1.7205e-09 deg/d
Q 3.269267653265552 1.7914e-08 au
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      7884 days (21.59 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:36:12  

Additional Information
 Earth MOID = 1.36043 au 
 Jupiter MOID = 2.13548 au 
 T_jup = 3.271 
[ 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 14.6   n/a MPO436110  

46954 (1998 SL121)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ 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
1968-Jun-01 04:56 00:01 Psych 0.0437949269286078 0.0437883810404598 0.0438014731599878 3.27446077777197 3.27446069340168 2440008.705716574 1.23263246024961 379.920972257844 45.8818327392089 31.1461973920349 75213.4559344802 T 20 CATAB v2.0f-lin.ifort 2020-May-20 09:36:15 2020-May-20 09:36
2148-Jun-17 12:13 00:06 Juno 0.0178025685221873 0.0178005592229112 0.0178046000120319 3.04825565559545 3.04825543140767 2505769.009266043 6.37255836584695 1158.97447347381 51.828377864926 -85.7279895557955 51155.1788084508 T 20 CATAB v2.0f-lin.ifort 2020-May-20 09:36:15 2020-May-20 09:36

Alternate Designations
 1998 SL121 = 2000 EY175 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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