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85176 (1990 RP2)
Classification: Main-belt Asteroid          SPK-ID: 2085176
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .187793864742312 2.8589e-08  
a 2.289034458381901 8.1146e-09 au
q 1.859167830914039 6.6496e-08 au
i 2.802847776717015 3.6487e-06 deg
node 242.1083090017692 7.1768e-05 deg
peri 116.836712167593 7.2598e-05 deg
M 261.6366674760127 1.172e-05 deg
tp 2459546.126995337994
(2021-Nov-27.62699534)
4.2089e-05 TDB
period 1264.960378313078
3.46
6.7264e-06
1.842e-08
d
yr
n .2845938941424298 1.5133e-09 deg/d
Q 2.718901085849763 9.6384e-09 au
  Orbit Determination Parameters
   # obs. used (total)      912  
   data-arc span      10843 days (29.69 yr)  
   first obs. used      1990-09-15  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:11:40  

Additional Information
 Earth MOID = .856066 au 
 Jupiter MOID = 2.7417 au 
 T_jup = 3.575 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456940.5 (2014-Oct-10.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1875772141655276 2.8635e-08  
q 1.860133748002458 6.6621e-08 au
tp 2457013.672645915766
(2014-Dec-22.17264592)
3.705e-05 TDB
node 242.274313277053 7.1918e-05 deg
peri 116.2727042320275 7.2739e-05 deg
i 2.798607635147631 3.6464e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      912  
   data-arc span      10843 days (29.69 yr)  
   first obs. used      1990-09-15  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:11:40  

Additional Information
 Jupiter MOID = 2.7417 au 
 T_jup = 3.575 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.199370738718788E-16 -1.898267914259611E-15 -1.142471049096613E-13 6.72256742367732E-15 -3.435321253374238E-14 -5.150513668339539E-17
q -1.898267914259611E-15 4.438345517010745E-15 3.179061308728164E-13 -1.593989713162909E-14 9.322613926351398E-14 2.082626651299878E-16
tp -1.142471049096613E-13 3.179061308728164E-13 1.372670938992341E-9 -1.374893960796709E-11 4.140789621459793E-10 5.991969979634032E-13
node 6.72256742367732E-15 -1.593989713162909E-14 -1.374893960796709E-11 5.172203082473386E-9 -5.169782784870623E-9 3.581988218374957E-11
peri -3.435321253374238E-14 9.322613926351398E-14 4.140789621459793E-10 -5.169782784870623E-9 5.290933494166933E-9 -3.560895291271448E-11
i -5.150513668339539E-17 2.082626651299878E-16 5.991969979634032E-13 3.581988218374957E-11 -3.560895291271448E-11 1.32962546509012E-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 15.85   n/a E2021B10  

85176 (1990 RP2)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1919-Jun-22 12:38 00:01 Juno 0.0431733927639447 0.0431721585633421 0.0431746279082718 5.36701001037405 5.36700995786945 2422132.026242277 1.13533143662664 471.073690310851 45.0509292099305 84.869001824793 142714.386483307 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 14:11:42 2021-Apr-13 14:11
2013-Jul-04 07:29 < 00:01 Amphi 0.0324871361933169 0.0324856926141444 0.032488579773789 3.45985747657723 3.45985742543221 2456477.811574795 0.607989867907783 73.0309872139101 41.6283437823207 -12.101093068122 69470.4876884209 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 14:11:42 2021-Apr-13 14:11
2127-Oct-20 11:02 00:04 Amphi 0.032183576297497 0.0321739333620337 0.0321932208274563 3.18732059014476 3.18732053410284 2498222.959460307 3.91124204984676 599.247641483377 40.0480168660991 36.7946803437378 72232.6228143342 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 14:11:42 2021-Apr-13 14:11

Alternate Designations
 1990 RP2 = 2001 XW190 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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