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27760 (1991 RB7)
Classification: Main-belt Asteroid          SPK-ID: 2027760
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893294175667643 4.2578e-08  
a 2.237092230080319 6.8265e-09 au
q 1.813544861116078 9.3665e-08 au
i 4.46533177193812 4.1275e-06 deg
node 4.768171440045005 4.1206e-05 deg
peri 5.129232688524856 4.2242e-05 deg
M 200.4572704627765 1.1954e-05 deg
tp 2459542.125094887796
(2021-Nov-23.62509489)
4.2117e-05 TDB
period 1222.14929332843
3.35
5.5941e-06
1.532e-08
d
yr
n .2945630308549029 1.3483e-09 deg/d
Q 2.660639599044559 8.119e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      16750 days (45.86 yr)  
   first obs. used      1974-06-18  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:22:51  

Additional Information
 Earth MOID = .813042 au 
 Jupiter MOID = 2.80328 au 
 T_jup = 3.610 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457135.5 (2015-Apr-23.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1888537800548744 4.2564e-08  
q 1.814918914935639 9.3617e-08 au
tp 2457095.593576646416
(2015-Mar-14.09357665)
3.6084e-05 TDB
node 4.798092236683602 4.1177e-05 deg
peri 4.746246181279391 4.2224e-05 deg
i 4.467903955640604 4.1276e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      16750 days (45.86 yr)  
   first obs. used      1974-06-18  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:22:51  

Additional Information
 Jupiter MOID = 2.80328 au 
 T_jup = 3.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.811690916018364E-15 -3.978331204836049E-15 3.520651869679311E-13 6.223814465168293E-15 2.312685947084823E-14 -4.952428619467585E-16
q -3.978331204836049E-15 8.764192526239744E-15 -6.975644109455262E-13 -1.325912434245037E-14 -3.23341018350093E-14 1.010184415901631E-15
tp 3.520651869679311E-13 -6.975644109455262E-13 1.302040344039578E-9 -3.96713598788701E-13 3.396700012540164E-10 -2.45066752388048E-12
node 6.223814465168293E-15 -1.325912434245037E-14 -3.96713598788701E-13 1.695549826524189E-9 -1.69042381923274E-9 -1.0498077219344E-11
peri 2.312685947084823E-14 -3.23341018350093E-14 3.396700012540164E-10 -1.69042381923274E-9 1.782849614795467E-9 9.841730541533495E-12
i -4.952428619467585E-16 1.010184415901631E-15 -2.45066752388048E-12 -1.0498077219344E-11 9.841730541533495E-12 1.70371459544739E-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 15.1   n/a MPO365581  

27760 (1991 RB7)          Discovered 1991-Sep-02 by McNaught, R. H. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RB7 = 1998 YW22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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