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3141 Buchar (1984 RH)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003141
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07172531108606149 3.7483e-08  
a 3.413323489015605 2.0034e-08 au
q 3.1685017999286 1.2479e-07 au
i 11.00340334473025 4.6954e-06 deg
node 321.0576108463129 2.0741e-05 deg
peri 154.5529637100805 3.7842e-05 deg
M 196.0348898525505 3.1827e-05 deg
tp 2460445.591927556244
(2024-May-15.09192756)
0.00020657 TDB
period 2303.374745887198
6.31
2.0279e-05
5.552e-08
d
yr
n .1562924142685856 1.376e-09 deg/d
Q 3.65814517810261 2.1471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2656  
   data-arc span      42550 days (116.50 yr)  
   first obs. used      1905-02-09  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39122  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 09:20:54  

Additional Information
 Earth MOID = 2.18887 au 
 Jupiter MOID = 1.41232 au 
 T_jup = 3.110 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457215.5 (2015-Jul-12.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07714309676170981 3.774e-08  
q 3.138087902225187 1.2777e-07 au
tp 2458134.951402816507
(2018-Jan-16.45140282)
0.000185 TDB
node 321.1494365684016 2.082e-05 deg
peri 152.2762955598218 3.5802e-05 deg
i 10.99677539592231 4.6892e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2656  
   data-arc span      42550 days (116.50 yr)  
   first obs. used      1905-02-09  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39122  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 09:20:54  

Additional Information
 Jupiter MOID = 1.41232 au 
 T_jup = 3.110 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.424304570668797E-15 -4.769369883009081E-15 1.788561415102425E-12 1.885712859831017E-15 2.681143077310508E-13 -3.466524366650191E-16
q -4.769369883009081E-15 1.632572275866426E-14 -5.647838267624069E-12 -5.77746502055728E-15 -8.716230594151572E-13 2.054968584160625E-15
tp 1.788561415102425E-12 -5.647838267624069E-12 3.422625949717951E-8 4.593572417782756E-13 5.403953592066994E-9 -3.984955623439226E-12
node 1.885712859831017E-15 -5.77746502055728E-15 4.593572417782756E-13 4.33464168775042E-10 -4.251181738496119E-10 1.387099368715561E-11
peri 2.681143077310508E-13 -8.716230594151572E-13 5.403953592066994E-9 -4.251181738496119E-10 1.281759481224343E-9 -1.426242784597872E-11
i -3.466524366650191E-16 2.054968584160625E-15 -3.984955623439226E-12 1.387099368715561E-11 -1.426242784597872E-11 2.19881948319047E-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 10.93   n/a E2021B10  
diameter diameter 36.05 km 2.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 11.41 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0858   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6

3141 Buchar (1984 RH)          Discovered 1984-Sep-02 by Mrkos, A. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1984 RH = 1952 PE = 1952 RQ = 1953 UF = 1953 VK2 = 1977 NM = 1977 OE = 1979 YW9 = A905 CE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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