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101155 (1998 RM74)
Classification: Main-belt Asteroid          SPK-ID: 2101155
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 .1613416013352871 8.0199e-08  
a 2.300692657650752 6.7717e-09 au
q 1.929495220085042 1.8342e-07 au
i 7.171627534237253 7.4724e-06 deg
node 205.395953735815 2.368e-05 deg
peri 157.0370281380135 2.7586e-05 deg
M 81.21440959581142 1.332e-05 deg
tp 2458712.947645940195
(2019-Aug-17.44764594)
4.694e-05 TDB
period 1274.636458932884
3.49
5.6275e-06
1.541e-08
d
yr
n .2824334715024465 1.2469e-09 deg/d
Q 2.671890095216462 7.8642e-09 au
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      8088 days (22.14 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:25  

Additional Information
 Earth MOID = .929778 au 
 Jupiter MOID = 2.7995 au 
 T_jup = 3.564 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457425.5 (2016-Feb-07.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1624674585059255 8.0476e-08  
q 1.926565014706953 1.8424e-07 au
tp 2457437.539745920586
(2016-Feb-19.03974592)
4.593e-05 TDB
node 205.4180856619069 2.3663e-05 deg
peri 156.7913420278661 2.7511e-05 deg
i 7.174301349791916 7.477e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      8088 days (22.14 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:25  

Additional Information
 Jupiter MOID = 2.7995 au 
 T_jup = 3.564 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.47644602935059E-15 -1.482005225081685E-14 2.115171860794732E-12 1.138763841681993E-14 4.724587003813298E-13 -1.680110350195238E-14
q -1.482005225081685E-14 3.394344238455223E-14 -4.857782572063299E-12 -2.612519412469576E-14 -1.087103490876618E-12 3.892644166766363E-14
tp 2.115171860794732E-12 -4.857782572063299E-12 2.109583502099376E-9 4.767919642725369E-12 6.375232463097137E-10 -8.898176521677748E-12
node 1.138763841681993E-14 -2.612519412469576E-14 4.767919642725369E-12 5.599390172617875E-10 -5.536192579650959E-10 4.706689911298129E-12
peri 4.724587003813298E-13 -1.087103490876618E-12 6.375232463097137E-10 -5.536192579650959E-10 7.568668092607817E-10 -7.083129152854945E-12
i -1.680110350195238E-14 3.892644166766363E-14 -8.898176521677748E-12 4.706689911298129E-12 -7.083129152854945E-12 5.590517846306259E-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 16.0   n/a MPO502725  

101155 (1998 RM74)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 RM74 = 2004 JP4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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