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308357 (2005 QR115)
Classification: Main-belt Asteroid          SPK-ID: 2308357
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09117693604604231 4.3653e-08  
a 2.984944062826665 3.5842e-08 au
q 2.712786008909305 1.3931e-07 au
i .6204432225325026 5.4041e-06 deg
node 272.4778931789356 0.00045528 deg
peri 86.25675968503626 0.00045634 deg
M 295.181781826848 3.2101e-05 deg
tp 2459339.654286056035
(2021-May-05.15428606)
0.00017057 TDB
period 1883.660896910385
5.16
3.3928e-05
9.289e-08
d
yr
n .1911172019286903 3.4423e-09 deg/d
Q 3.257102116744026 3.911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      8596 days (23.53 yr)  
   first obs. used      1995-10-27  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:09:19  

Additional Information
 Earth MOID = 1.70902 au 
 Jupiter MOID = 2.16181 au 
 T_jup = 3.252 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457035.5 (2015-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09276682644387853 4.3463e-08  
q 2.704138744670747 1.3846e-07 au
tp 2457467.362501075662
(2016-Mar-19.86250108)
0.00015722 TDB
node 272.5679532404877 0.00045586 deg
peri 87.80782305398289 0.0004569 deg
i .6201429377228567 5.4047e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      8596 days (23.53 yr)  
   first obs. used      1995-10-27  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:09:19  

Additional Information
 Jupiter MOID = 2.16181 au 
 T_jup = 3.252 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.889044622159102E-15 -5.857147274723749E-15 -3.340829731796939E-13 4.52413930049001E-15 -4.236361851406393E-14 3.470073651343192E-17
q -5.857147274723749E-15 1.917188268606151E-14 2.199773874244323E-12 -9.950925371800796E-15 3.053186913387233E-13 1.012705377760174E-17
tp -3.340829731796939E-13 2.199773874244323E-12 2.471714962303041E-8 -6.805050937778838E-11 4.87008377075851E-9 2.243003274134398E-13
node 4.52413930049001E-15 -9.950925371800796E-15 -6.805050937778838E-11 2.07804019463843E-7 -2.078048711881267E-7 -3.223730271736093E-11
peri -4.236361851406393E-14 3.053186913387233E-13 4.87008377075851E-9 -2.078048711881267E-7 2.087551113749782E-7 3.227286212822659E-11
i 3.470073651343192E-17 1.012705377760174E-17 2.243003274134398E-13 -3.223730271736093E-11 3.227286212822659E-11 2.921096103479652E-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 16.7   n/a MPO440448  

308357 (2005 QR115)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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