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181815 (1998 RX43)
Classification: Main-belt Asteroid          SPK-ID: 2181815
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .2505919097179997 1.329e-07  
a 2.462851201453065 3.0526e-08 au
q 1.845680615529672 3.0793e-07 au
i 8.360275638087925 5.2359e-06 deg
node 349.1248442539175 3.416e-05 deg
peri 4.040506004774903 5.2818e-05 deg
M 271.1069612640392 6.4375e-05 deg
tp 2459549.094827925526
(2021-Nov-30.59482793)
0.00025874 TDB
period 1411.743144769129
3.87
2.6247e-05
7.186e-08
d
yr
n .2550038945355552 4.7409e-09 deg/d
Q 3.080021787376459 3.8175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      7938 days (21.73 yr)  
   first obs. used      1998-08-23  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59626  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:10  

Additional Information
 Earth MOID = .838802 au 
 Jupiter MOID = 2.36127 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457451.5 (2016-Mar-04.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2491314819745044 1.3199e-07  
q 1.851658080675899 3.0453e-07 au
tp 2458136.938941859050
(2018-Jan-18.43894186)
0.00023401 TDB
node 349.1590435956842 3.4121e-05 deg
peri 3.840397349445821 5.2848e-05 deg
i 8.361929278042874 5.2355e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      7938 days (21.73 yr)  
   first obs. used      1998-08-23  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59626  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:10  

Additional Information
 Jupiter MOID = 2.36127 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.74206532079119E-14 -4.016225660439912E-14 2.767593784923569E-11 -1.717923636451573E-13 4.584735679863335E-12 -9.939146157596315E-14
q -4.016225660439912E-14 9.27369095484448E-14 -6.272233217907869E-11 3.849423022264864E-13 -1.035993528810076E-11 2.242138419458977E-13
tp 2.767593784923569E-11 -6.272233217907869E-11 5.476079274095738E-8 -3.568681095556712E-10 9.45023245330964E-9 -2.087727379996949E-10
node -1.717923636451573E-13 3.849423022264864E-13 -3.568681095556712E-10 1.164235610775295E-9 -1.210922270925433E-9 -1.725615304664583E-11
peri 4.584735679863335E-12 -1.035993528810076E-11 9.45023245330964E-9 -1.210922270925433E-9 2.792952111122958E-9 -1.789009262977666E-11
i -9.939146157596315E-14 2.242138419458977E-13 -2.087727379996949E-10 -1.725615304664583E-11 -1.789009262977666E-11 2.741064868083575E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.49   n/a E2021B55  

181815 (1998 RX43)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1998 RX43 = 2002 TY90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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