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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1876986784063086 2.8643e-08  
a 2.289065738552939 8.1754e-09 au
q 1.859411124641392 6.6633e-08 au
i 2.802803929071004 3.6488e-06 deg
node 242.1098536873114 7.1899e-05 deg
peri 116.8510193486146 7.2729e-05 deg
M 204.6900556462506 1.1609e-05 deg
tp 2459546.235980565033
(2021-Nov-27.73598057)
4.2205e-05 TDB
period 1264.986307354046
3.46
6.7768e-06
1.855e-08
d
yr
n .2845880606826542 1.5246e-09 deg/d
Q 2.718720352464487 9.7099e-09 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      10843 days (29.69 yr)  
   first obs. used      1990-09-15  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:49  

Additional Information
 Earth MOID = .857954 au 
 Jupiter MOID = 2.74111 au 
 T_jup = 3.575 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456938.5 (2014-Oct-08.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1875780349748896 2.8699e-08  
q 1.860133399212512 6.6796e-08 au
tp 2457013.672782935109
(2014-Dec-22.17278294)
3.7096e-05 TDB
node 242.2743794477244 7.2049e-05 deg
peri 116.2727105182733 7.2869e-05 deg
i 2.7986078985293 3.6466e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      10843 days (29.69 yr)  
   first obs. used      1990-09-15  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:49  

Additional Information
 Jupiter MOID = 2.74111 au 
 T_jup = 3.575 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.236137688856755E-16 -1.907525007491505E-15 -1.178157016648285E-13 6.823298111374569E-15 -3.521851858258462E-14 -5.274850893711529E-17
q -1.907525007491505E-15 4.461651326571005E-15 3.268828431193586E-13 -1.618339856771328E-14 9.539300151567631E-14 2.114612130251861E-16
tp -1.178157016648285E-13 3.268828431193586E-13 1.376123670899486E-9 -1.38126468608264E-11 4.148817284858877E-10 6.00670366790624E-13
node 6.823298111374569E-15 -1.618339856771328E-14 -1.38126468608264E-11 5.191018774274171E-9 -5.188588706832501E-9 3.597552817712677E-11
peri -3.521851858258462E-14 9.539300151567631E-14 4.148817284858877E-10 -5.188588706832501E-9 5.30988776967612E-9 -3.576409113375201E-11
i -5.274850893711529E-17 2.114612130251861E-16 6.00670366790624E-13 3.597552817712677E-11 -3.576409113375201E-11 1.329754547111722E-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 15.8   n/a MPO453282  

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 26 CATAB v2.0f-lin.ifort 2020-Nov-12 21:01:51 2020-Nov-12 21:01
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 26 CATAB v2.0f-lin.ifort 2020-Nov-12 21:01:51 2020-Nov-12 21:01
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 26 CATAB v2.0f-lin.ifort 2020-Nov-12 21:01:51 2020-Nov-12 21:01

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