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27761 (1991 RL13)
Classification: Main-belt Asteroid          SPK-ID: 2027761
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757830460538194 5.6015e-08  
a 2.212682386660005 7.593e-09 au
q 1.823730336783274 1.2342e-07 au
i 2.393662580101323 4.2482e-06 deg
node 293.8212746413114 0.00010328 deg
peri 32.03559756219795 0.0001037 deg
M 280.9093928643249 1.0951e-05 deg
tp 2459264.618884097670
(2021-Feb-19.11888410)
3.7232e-05 TDB
period 1202.200889823143
3.29
6.1882e-06
1.694e-08
d
yr
n .2994507848459169 1.5414e-09 deg/d
Q 2.601634436536736 8.9278e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1011  
   data-arc span      10036 days (27.48 yr)  
   first obs. used      1991-09-13  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5649  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:05:20  

Additional Information
 Earth MOID = .812357 au 
 Jupiter MOID = 2.71853 au 
 T_jup = 3.634 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456435.5 (2013-May-23.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762540614659356 5.6163e-08  
q 1.822517568784383 1.2378e-07 au
tp 2456858.927460993020
(2014-Jul-20.42746099)
3.254e-05 TDB
node 293.9487737068466 0.00010309 deg
peri 31.73803940570793 0.00010351 deg
i 2.396053297035116 4.253e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1011  
   data-arc span      10036 days (27.48 yr)  
   first obs. used      1991-09-13  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5649  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:05:20  

Additional Information
 Jupiter MOID = 2.71853 au 
 T_jup = 3.634 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.154251074935249E-15 -6.942996873635478E-15 6.011669546366962E-13 6.963260113258655E-15 6.826277717195123E-14 -3.636124464724757E-15
q -6.942996873635478E-15 1.532164944641257E-14 -1.290898183304023E-12 -1.428637456102589E-14 -1.467344388080182E-13 8.072696168606237E-15
tp 6.011669546366962E-13 -1.290898183304023E-12 1.058844616830247E-9 1.83734208165175E-12 3.118672809718685E-10 -1.260093774492958E-12
node 6.963260113258655E-15 -1.428637456102589E-14 1.83734208165175E-12 1.062816054528032E-8 -1.061859045687169E-8 1.832455103385158E-10
peri 6.826277717195123E-14 -1.467344388080182E-13 3.118672809718685E-10 -1.061859045687169E-8 1.071475007457948E-8 -1.833830476116806E-10
i -3.636124464724757E-15 8.072696168606237E-15 -1.260093774492958E-12 1.832455103385158E-10 -1.833830476116806E-10 1.808812444907943E-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 15.3   n/a MPO259532  
diameter diameter 2.431 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27761 (1991 RL13)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RL13 = 1998 XT34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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